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Buttocks

The buttocks, also known as the gluteal region, consist of two rounded, fleshy prominences on the posterior aspect of the human pelvis, primarily composed of thick layers of muscle and subcutaneous fat that provide cushioning and support during sitting.^[1] These structures lie posterior to the bony pelvis, bounded superiorly by the iliac crest and inferiorly by the gluteal fold, and play essential roles in locomotion, posture, and pelvic stability.^[2] The primary musculature of the buttocks comprises the gluteal muscle group, including the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus, the largest and most superficial, originates from the ilium, sacrum, and related structures and inserts into the iliotibial tract and gluteal tuberosity of the femur. The gluteus medius and minimus originate from the ilium and insert into the greater trochanter of the femur.^[3]^[2] The gluteus maximus forms the bulk of the buttock's contour and functions as the chief extensor and external rotator of the hip, aiding in activities such as rising from a seated position, climbing stairs, and controlling trunk flexion during running.^[3] The gluteus medius and minimus, located deeper and more laterally, primarily act as hip abductors and stabilizers, preventing pelvic drop during walking and single-leg stance by compressing the femoral head into the acetabulum.^[2]^[4] In human evolution, the enlargement of the gluteus maximus distinguishes hominids from other primates and is linked to enhanced bipedal capabilities, particularly in running, where it decelerates the swing leg and stabilizes the pelvis against high-impact forces.^[5] Medically, the gluteal region's anatomy is critical for lower limb function, with injuries or weaknesses in these muscles often leading to conditions like Trendelenburg gait or greater trochanteric pain syndrome, underscoring their importance in overall mobility and balance.^[4]^[3]

Anatomy

Muscular Composition

The buttocks are primarily composed of the gluteal muscles, which form the prominent rounded contours of the posterior pelvis and upper thigh. These muscles include the gluteus maximus, gluteus medius, and gluteus minimus, collectively responsible for the structural bulk and shape of the region.^[3] The gluteus maximus is the largest and most superficial of the gluteal muscles, constituting the majority of the buttock's mass and giving it its characteristic prominence. It originates from the posterior aspect of the ilium behind the posterior gluteal line, the dorsal surface of the sacrum and coccyx, and the sacrotuberous ligament. Its fibers insert primarily into the iliotibial tract and the gluteal tuberosity of the proximal femur. The gluteus medius lies deep to the maximus and originates from the external surface of the ilium between the anterior and posterior gluteal lines, inserting into the lateral surface of the greater trochanter of the femur. The gluteus minimus, the smallest and deepest of the trio, arises from the outer surface of the ilium between the anterior and inferior gluteal lines, with insertions on the anterior border of the greater trochanter and a small portion blending into the iliofemoral ligament.^[3]^[2]^[4] The muscular composition exhibits a layered arrangement, with the gluteus maximus forming the superficial layer that covers the posterior hip. Beneath it lies the middle layer, consisting of the gluteus medius and minimus, which fan out laterally. The deep layer includes smaller rotator muscles such as the piriformis, which originates from the anterior sacrum and sacrotuberous ligament and inserts on the greater trochanter, and the obturator internus, arising from the pelvic walls and obturator membrane before passing through the lesser sciatic foramen to attach to the greater trochanter. These deep structures contribute to the overall stability of the gluteal region without dominating its external contour.^[6] The gluteal muscles, particularly the gluteus maximus, consist of a mixture of muscle fiber types, including slow-twitch (type I) fibers for endurance and fast-twitch (type II) fibers for power generation, with the latter comprising a predominant proportion in the maximus to support explosive movements. This fiber composition varies slightly across individuals but generally balances sustained postural support with rapid force production.^[7]^[8]

Skeletal and Adipose Elements

The skeletal framework of the buttocks is primarily provided by the pelvis, a bony structure formed by the fusion of the ilium, ischium, and pubis on each side, which articulate posteriorly with the sacrum and coccyx.^[9] The ilium forms the broad, superior portion of the hip bone, contributing to the lateral flare of the pelvis and serving as an attachment site for surrounding tissues; the ischium constitutes the posterior-inferior part, including the tuberosities that support sitting; and the pubis forms the anterior aspect, completing the ring-like pelvic girdle.^[10] Posteriorly, the sacrum—a triangular bone formed by five fused vertebrae—anchors the pelvis to the spine, while the coccyx, or tailbone, consisting of three to five rudimentary vertebrae, provides additional posterior support and flexibility.^[11] Stability in this region is maintained by a complex network of ligaments, particularly those of the sacroiliac joint, which connects the sacrum to the ilium bilaterally. The interosseous sacroiliac ligament, the strongest of these, lies deep within the joint and resists shear forces, while the posterior sacroiliac ligaments reinforce the dorsal aspect, and the anterior and inferior ligaments provide additional ventral and caudal support.^[12] These ligaments collectively limit excessive motion, ensuring the transfer of loads from the upper body to the lower limbs.^[13] Overlying the skeletal elements, adipose tissue forms a prominent subcutaneous layer in the buttocks, contributing to contour, cushioning, and functional roles. This gluteal fat is predominantly white adipose tissue, specialized for energy storage in the form of triglycerides, which can be mobilized during periods of caloric deficit.^[14] It also aids in thermoregulation through insulation, helping to maintain core body temperature by reducing heat loss, particularly in the lower body.^[15] Distribution varies significantly by sex, with females exhibiting thicker gluteal-femoral subcutaneous fat layers—often 1.5 to 2 times greater than in males—due to estrogen-driven deposition, an adaptation linked to reproductive demands such as supporting gestation and lactation by providing a readily accessible energy reserve.^[16]^[15] Anatomical variations in these elements influence buttock morphology across populations. Ethnic differences in adipose deposition are evident, with, for example, Black individuals showing greater peripheral (gluteal) fat accumulation compared to White individuals, who tend toward more central distribution, potentially affecting metabolic profiles.^[17] Similarly, pelvic tilt angles exhibit ethnic variability; the average anterior pelvic tilt is approximately 14 degrees overall, but studies indicate subtle differences, such as slightly higher values in Asian cohorts (around 14 degrees) compared to Caucasian (around 13 degrees) or African American groups (around 12 degrees), influencing posture and load distribution.^[18]^[19]

Innervation and Blood Supply

The innervation of the buttocks primarily arises from branches of the sacral plexus, formed by the anterior rami of spinal nerves L4 through S3. The superior gluteal nerve, originating from the posterior divisions of L4, L5, and S1, exits the pelvis superior to the piriformis muscle via the greater sciatic foramen and provides motor innervation to the gluteus medius, gluteus minimus, and tensor fasciae latae muscles.^[20] The inferior gluteal nerve, derived from the posterior divisions of L5 through S2, emerges inferior to the piriformis and supplies motor innervation exclusively to the gluteus maximus muscle.^[21] Additionally, the sciatic nerve, the largest branch of the sacral plexus (from L4-S3), passes through the gluteal region inferior to the piriformis muscle, contributing to the overall neural framework without direct muscular innervation in this area.^[22] Sensory innervation to the skin of the buttocks is provided by the posterior femoral cutaneous nerve, a sensory branch of the sacral plexus arising from S1 through S3, which emerges inferior to the piriformis and distributes branches to the posterior thigh and inferior gluteal skin.^[23] The arterial blood supply to the buttocks derives mainly from branches of the internal iliac artery. The superior gluteal artery, the largest branch of the posterior division of the internal iliac, enters the gluteal region superior to the piriformis muscle and supplies the gluteus medius, gluteus minimus, and overlying tissues via deep and superficial branches.^[24] The inferior gluteal artery, from the anterior division of the internal iliac, passes inferior to the piriformis and provides blood to the gluteus maximus, sciatic nerve, and posterior thigh structures.^[25] Venous drainage occurs via accompanying venae comitantes: the superior gluteal veins drain the upper gluteal region and empty into the internal iliac vein, while the inferior gluteal veins collect blood from the lower buttocks and posterior thigh before similarly converging into the internal iliac vein.^[26] Lymphatic vessels from the gluteal tissues drain primarily to the internal iliac lymph nodes, which lie along the internal iliac vessels and receive afferents from the pelvic viscera, perineum, and gluteal region, facilitating the spread of infections if compromised.^[27]

Functions

Biomechanical Roles

The gluteus maximus plays a primary role in hip extension, particularly during the action of rising from a seated position, where it contracts powerfully to extend the hip joint and elevate the trunk against gravity. This muscle, in coordination with the hamstrings, generates substantial force to overcome the body's weight, with hip joint contact forces during sit-to-stand movements reaching approximately 3.5 times body weight depending on seat height and technique.^[28] The gluteus medius, meanwhile, facilitates hip abduction and provides lateral stability, essential for maintaining balance during transitional movements like standing from sitting.^[3] In the gait cycle, the buttocks contribute significantly to propulsion and pelvic equilibrium. During the push-off phase, the gluteus maximus activates to extend the hip, propelling the body forward and facilitating efficient stride progression, particularly in activities involving acceleration or incline walking.^[29] Concurrently, the gluteus medius and minimus stabilize the pelvis in the frontal plane during the stance phase, contracting to counteract the downward pull of body weight on the contralateral side and preventing pelvic drop, which would otherwise result in a Trendelenburg gait pattern.^[30] The gluteal muscles and overlying adipose tissue also aid in shock absorption during dynamic impacts, such as those encountered in running or jumping. Eccentric contractions of the gluteus maximus and medius dissipate vertical forces upon ground contact, reducing stress transmission to the hip and spine, while the subcutaneous fat layer in the buttocks provides additional viscoelastic cushioning to attenuate peak loads.^[31] Electromyography studies demonstrate that gluteus maximus activation peaks at 50-100% of maximum voluntary isometric contraction (MVIC) during squat exercises, which mimic the eccentric demands of landing and propulsion in these activities.^[32]

Physiological Support

The buttocks play a crucial role in physiological support during sitting and weight-bearing activities, primarily through the combined action of gluteal adipose tissue and the underlying ischial tuberosities. When seated, the ischial tuberosities, the bony prominences of the pelvis, bear a substantial portion of body weight—approximately 60-70% distributed across the tuberosities and adjacent thighs—while the overlying gluteal fat layer helps redistribute this load to prevent localized pressure concentrations that could lead to tissue damage.^[33] Studies on seated posture indicate that interface pressures at these sites can reach 20–30 kPa (150–225 mmHg) due to the small contact area, underscoring the importance of gluteal fat in cushioning and equalizing forces for sustained comfort and tissue viability.^[34] This distribution mechanism is essential for maintaining postural stability over prolonged periods, as thicker gluteal fat correlates with reduced peak pressures and improved load dissipation.^[35] Beyond mechanical support, the muscular and adipose padding of the buttocks provides vital protection to underlying pelvic structures, including the rectum and reproductive organs. The gluteal muscles, particularly the gluteus maximus, form a robust posterior barrier that absorbs impacts and shields sensitive viscera from external trauma, while the subcutaneous fat layer adds compliant cushioning to mitigate compressive forces on the pelvic floor and posterior pelvic wall.^[11] This protective role is particularly evident in activities involving direct pressure on the posterior pelvis, where the combined mass of muscle and fat prevents direct transmission of forces to delicate structures like the sacrum, coccyx, and rectal wall.^[36] The adipose tissue in the buttocks also contributes to thermoregulation by serving as an insulating layer that helps maintain core body temperature. Subcutaneous fat in the gluteofemoral region, which is notably thick in this area, acts as a thermal barrier, reducing heat loss in cooler environments and stabilizing internal temperatures through its low thermal conductivity.^[37] This insulation is especially adaptive in humans, where the buttocks' fat depot complements overall body fat distribution to support homeostasis without compromising mobility.^[38] Metabolically, gluteofemoral fat functions as a key energy reserve with distinct sex-specific adaptations that enhance physiological resilience. In women, this depot accumulates higher proportions of subcutaneous fat compared to men, serving as a buffered store for excess lipids that protects against metabolic disorders like insulin resistance.^[15] Notably, gluteofemoral fat is enriched in long-chain polyunsaturated fatty acids, such as omega-3s (e.g., DHA), which are preferentially mobilized during pregnancy and lactation to support fetal brain development and milk production, reflecting an evolutionary prioritization of this region for reproductive demands.^[39] These sex differences highlight the buttocks' role in long-term energy homeostasis, with women's greater gluteofemoral stores providing a metabolic advantage during periods of nutritional stress.^[40]

Cultural and Linguistic Aspects

Terminology Across Languages

In English, the term "buttocks" refers to the two protuberances forming the rump and dates to around 1300, derived from Old English buttuc, meaning "end" or "short ridge of land," ultimately from Proto-Germanic butaz and the Proto-Indo-European root bhau- "to strike," evoking a blunt or rounded shape.^[41] Colloquial variants include "bum," which emerged in the late 14th century as a Middle English term for the posterior, possibly an onomatopoeic formation or shortening related to "bottom," though its precise origin remains uncertain among linguists.^[42] "Rear," often as "rear end," stems from the 17th century, with "rear" itself from Old French riere "behind," borrowed into Middle English to denote the hindmost part of the body.^[43] Slang like "ass" for the buttocks traces to Old English ærs "rump" or "tail," from Proto-Germanic arsoz, a distinct root from the unrelated donkey term "ass" borrowed from Latin asinus around the 8th century; the American English "ass" evolved as a phonetic variant of British "arse."^[44]^[45] Historically, terminology for the buttocks evolved from ancient languages with roots in anatomy and everyday description. In ancient Greek, the word pygē (πυγή) denoted the buttocks or rump, as seen in compounds like kallipygos (καλλίπυγος), meaning "having beautiful buttocks," combining kallos "beauty" with pygē; this term influenced later artistic and anatomical discourse. In Latin, formal terms included clunes (plural of clunis, "buttock" or "haunch") and nates (buttocks, literally "haunches"), used in classical texts for the gluteal region, with clunes appearing in medical and literary contexts to describe the rounded muscular masses.^[46] These ancient terms shifted over time toward more anatomical precision in European languages, reflecting influences from Greco-Roman scholarship. Across modern languages, words for buttocks vary in formality and cultural nuance. In French, fesses (plural) is the standard term for the buttocks, derived from Vulgar Latin fessa related to "haunches."^[47] German uses Gesäß, a neutral anatomical word from Middle High German gesæz meaning "seat" or "placement," emphasizing the seated position.^[48] Spanish employs nalgas as the standard term for the buttocks, derived from Latin clunis, with glúteos used in formal medical contexts.^[49] In Japanese, oshiri (お尻) is the common term, a polite compound from o (honorific prefix) and shiri "rear" or "bottom," rooted in Old Japanese descriptors of the body's hind part. Swahili features matako (plural) for buttocks, from Bantu roots denoting the rear or hindquarters, with kitako as a regional variant in East African dialects.^[50]^[51] Shifts in formality have led to widespread use of euphemisms to avoid vulgarity. Medical and polite English contexts favor "gluteal region," from Latin gluteus (buttock muscle), or "posterior," borrowed from Latin posterior "coming after" or "hind."^[46]^[52] Similarly, "behind" serves as a neutral indirect term, evolving from Old English behindan "at the back," to denote the buttocks without explicitness in formal or familial speech. These euphemisms parallel patterns in other languages, where anatomical precision (e.g., French région fessière) contrasts with colloquial directness to maintain decorum.^[47] In various African societies, particularly among the Khoisan peoples of southern Africa, pronounced buttocks associated with steatopygia—a genetic accumulation of fat in the buttocks and thighs—have historically symbolized beauty, fertility, and health, serving as desirable traits in mate selection and cultural aesthetics.^[53] This trait, evident in ancient representations like Upper Paleolithic Venus figurines dating back up to 38,000 years, reflects an evolutionary adaptation linked to reproductive success in resource-scarce environments.^[54] Similarly, in Polynesian cultures, full hips and buttocks have been emphasized in traditional body ideals as markers of fertility and vitality, often associated with health and prosperity.^[55] In Western societies, ideals of rounded, curvaceous buttocks gained prominence after the 1950s, influenced by post-war cultural shifts toward the hourglass figure exemplified by figures like Marilyn Monroe, where a waist-to-hip ratio emphasizing fuller hips and buttocks became a standard of feminine allure.^[56] This preference aligns with cross-cultural patterns where ideal buttock circumference is approximately 1.4 times the waist, a proportion observed consistently in beauty standards from the mid-20th century onward.^[57] Victorian-era society in 19th-century Britain and America exemplified prudishness toward the body, including the buttocks, with public discourse avoiding direct references to avoid associations with indecency or immorality, as erotic literature was confined to underground markets amid widespread moral repression.^[58] In contrast, modern media and slang have normalized humor around buttocks, using terms like "booty," "badonkadonk," and "gyatt" in comedic contexts to highlight exaggeration or appeal, often in pop culture references that blend levity with sexual innuendo.^[59] Gender differences in symbolism persist: female buttocks are frequently portrayed as symbols of sensual allure and fertility, while male buttocks evoke connotations of physical power and dominance, as seen in athletic or authoritative depictions.^[60] From an evolutionary psychology perspective, attraction to certain buttock proportions in females is tied to health and reproductive indicators, particularly a waist-to-hip ratio (WHR) of approximately 0.7, which signals optimal estrogen levels, lower disease risk, and higher fertility across diverse populations.^[61] Seminal studies demonstrate that this ratio remains a consistent cue for male mate preferences, independent of overall body size, underscoring its role as an adaptive signal of genetic fitness.^[62] Since the 2010s, body positivity movements have challenged Eurocentric standards favoring slender, straight silhouettes by promoting acceptance of curvaceous forms, including fuller buttocks, as valid expressions of diverse beauty, drawing from Black feminist activism to counter racialized thinness ideals in media and fashion.^[63] These efforts, amplified on social platforms, emphasize intersectional representation, critiquing how traditional norms marginalized non-white body types and advocating for broader inclusivity in cultural perceptions of desirability.^[63]

Representations in Art and Media

Historical Artistic Depictions

The depiction of buttocks in ancient art often emphasized symbolic fertility and idealized beauty. The Venus of Willendorf, a limestone figurine from the Upper Paleolithic era dating to around 25,000 BCE, exemplifies this through its exaggerated buttocks, breasts, and hips, which scholars interpret as representations of reproductive abundance and maternal power in prehistoric societies.^[64] Similarly, in classical Greek sculpture, Praxiteles' Aphrodite of Knidos (circa 350 BCE) introduced a revolutionary nude female form with balanced, harmonious proportions, including gently curved hips and buttocks that highlighted natural grace in the contrapposto stance, setting a standard for subsequent Western art.^[65] During the Renaissance, artistic focus shifted toward anatomical precision and humanism, rendering buttocks with greater muscular detail and sensual softness. Michelangelo's marble statue of David, completed in 1504, showcases the male buttocks as firm and dynamically tensed, contributing to the overall portrayal of heroic vitality and anatomical realism derived from classical models.^[66] In contrast, Sandro Botticelli's The Birth of Venus (circa 1485) presents the goddess's buttocks in profile with flowing, ethereal contours, evoking a delicate, almost weightless femininity inspired by antique sources and Neoplatonic ideals of divine beauty.^[67] Non-Western traditions also prominently featured buttocks in artistic expressions of eroticism and cultural values. In Japanese ukiyo-e prints from the Edo period (1603–1868), particularly in shunga erotic genres, artists like Hokusai and Utamaro accentuated rounded buttocks in intimate scenes to convey sensuality and pleasure, often within woodblock compositions that celebrated the human form's vitality. African tribal sculptures and masks, such as those from the Nok culture or Baga peoples, frequently incorporated prominent, exaggerated buttocks alongside breasts to symbolize fertility and communal prosperity, reflecting spiritual beliefs in life's generative forces.^[68] By the Baroque era, depictions evolved from earlier symbolic exaggeration toward more naturalistic and voluptuous realism, capturing the play of light on flesh. Peter Paul Rubens' paintings, such as The Three Graces (circa 1635), portray female nudes with full, dimpled buttocks that emphasize tactile abundance and dynamic movement, marking a departure from Renaissance ideality toward a sensory celebration of the body's imperfections and vitality.^[69] This stylistic progression underscored a broader artistic trend from abstract symbolism in antiquity to lifelike sensuality by the 17th century.

Contemporary Media and Fashion

In contemporary media, the portrayal of buttocks has often centered on objectification, particularly in Hollywood films and television from the late 20th century onward. During the 1980s, action movies frequently employed "butt shots" to sexualize female characters, reinforcing spectacle over narrative depth and contributing to the era's emphasis on idealized female forms.^[70] This trend extended to fitness videos, where aerobics programs promoted toned glutes as a symbol of health and attractiveness, influencing public perceptions of body standards through visual media. By the 2000s, music videos amplified this focus; Jennifer Lopez's performances, such as in "I'm Real" (2001) and later collaborations like "Booty" (2014) with Iggy Azalea, popularized "booty culture" by celebrating curvaceous figures, marking a shift toward embracing Latina body ideals in mainstream pop entertainment.^[71]^[72] Fashion trends in the 2010s further highlighted buttocks through clothing designed to accentuate shape and curves. The resurgence of high-waisted pants, popularized around 2010 and peaking mid-decade, elongated the legs while cinching the waist to emphasize the hip-to-buttock ratio, making them a staple for creating a flattering silhouette.^[73]^[74] Concurrently, body contouring techniques using makeup gained traction as a beauty hack, with tutorials demonstrating how to apply bronzer and highlighter to enhance glute definition for a lifted appearance, often shared via social platforms.^[75] Athleisure wear, exemplified by yoga pants from brands like Lululemon since the early 2000s, revolutionized casual apparel by offering form-fitting designs that sculpted and showcased the buttocks, blending functionality with aesthetic appeal during the athleisure boom.^[76] Digital media in the mid-2010s introduced playful yet objectifying trends like "belfies," or butt selfies, which exploded on platforms such as Instagram following Kim Kardashian's 2014 Paper magazine cover, encouraging users to photograph their posteriors for viral sharing.^[77] Advertising campaigns, including those from Victoria's Secret, often centered buttocks in lingerie promotions; a 2015 ad sparked backlash for digitally altering a model's butt cheek, underscoring the brand's historical reliance on idealized, airbrushed imagery to sell fantasy.^[78] These portrayals contributed to widespread digital filters and edits that prioritized enhanced glute shapes. By the 2020s, shifts toward inclusivity in media and fashion began countering earlier objectification, with campaigns featuring diverse body types to promote body positivity. Victoria's Secret, responding to criticism, relaunched its fashion show in 2024 with models of varying sizes, ages, and ethnicities, including curvier figures, and continued this approach in the 2025 show (held October 15, 2025) as part of a broader rebranding emphasizing representation over perfection.^[79]^[80] Brands like Aerie and Girlfriend Collective extended this by showcasing unretouched images of diverse buttocks and hips in athleisure and intimates ads, challenging airbrushing norms and fostering acceptance of natural variations in shape and size.^[81]

Medical and Health Considerations

Common Pathologies

Common pathologies affecting the buttocks encompass a range of musculoskeletal, dermatological, infectious, and traumatic conditions, often arising from anatomical positioning, repetitive stress, or external factors. These disorders can lead to pain, inflammation, or tissue damage in the gluteal region, with prevalence varying by demographic and risk factors.^[82] Musculoskeletal issues include piriformis syndrome, a form of nerve entrapment where the piriformis muscle compresses the sciatic nerve, contributing to 0.3% to 6% of low back pain cases.^[82] This condition typically presents with buttock pain exacerbated by hip movements. Gluteal tendinopathy, involving degeneration of the gluteal tendons, commonly results from overuse, such as in repetitive activities or altered gait patterns.^[83]^[84] Skin and soft tissue disorders feature pilonidal cysts, which form from ingrown hairs in the sacrococcygeal area and have an incidence of 26 per 100,000 individuals, predominantly affecting young males.^[85] Cellulite, characterized by dimpled subcutaneous fat, impacts 80% to 90% of post-pubertal women, particularly on the buttocks and thighs due to structural changes in connective tissue.^[86] Infectious conditions often stem from bacterial entry, such as abscesses developing from folliculitis, where inflamed hair follicles in the buttocks progress to pus-filled collections.^[87]^[88] Pressure ulcers, also known as sacral decubitus ulcers from prolonged sitting, range from Stage I (non-blanchable erythema) to Stage IV (full-thickness tissue loss exposing bone or muscle), commonly occurring in immobile individuals.^[89]^[90] Traumatic injuries frequently involve contusions and hematomas in the buttocks following falls, where direct impact causes bleeding into muscle or soft tissue, leading to swelling and bruising.^[91] Sciatica, involving irritation of the sciatic nerve, often radiates pain from the lower back into the gluteal area, mimicking local pathology.^[92]

Surgical and Cosmetic Interventions

Surgical interventions for the buttocks encompass both reconstructive procedures to address pathological or traumatic defects and cosmetic enhancements for aesthetic improvement. Reconstructive surgery for pilonidal sinus disease typically involves wide excision of the affected tissue followed by flap closure to promote healing and reduce recurrence. Common techniques include the Limberg rhomboid flap, which rotates adjacent gluteal skin to cover the defect, achieving recurrence rates as low as 2-5% in long-term follow-up studies. Other options, such as the V-Y advancement fasciocutaneous flap, provide tension-free closure for larger excisions in the sacrococcygeal region, minimizing wound dehiscence.^[93]^[94] Gluteal reconstruction following trauma or tissue loss often utilizes muscle flaps to restore volume and function. The gluteus maximus muscle flap, either as a full or partial turnover, is frequently employed for coverage of deep defects, supplying robust vascularized tissue to prevent infection and promote integration. In cases of combined soft tissue and bony involvement, propeller perforator flaps combined with gluteus maximus augmentation have demonstrated reliable outcomes, with low flap failure rates under 5% in reported series. These approaches prioritize preserving hip abductor function while achieving aesthetic symmetry.^[95]^[96] Cosmetic procedures focus on augmentation to enhance shape and projection. The Brazilian butt lift (BBL), involving autologous fat grafting from donor sites like the abdomen, has surged in popularity, with 29,466 procedures performed by American Society of Plastic Surgeons (ASPS) members in 2024, following stabilization after a peak in the early 2020s.^[97] Fat is harvested via liposuction, purified, and injected into the gluteal subcutaneous and intramuscular planes for natural contouring. Recent advancements, such as ultrasound-guided injection, have been reported to reduce risks, including fatalities, in initial studies.^[98] Alternatively, silicone implants placed in the submuscular pocket offer volume addition for patients lacking sufficient fat reserves, though they carry risks of migration and extrusion if positioning is suboptimal.^[99]^[100] Non-surgical options provide temporary enhancements with minimal downtime. Hyaluronic acid-based fillers, such as stabilized gels, are injected into the gluteal dermis and subcutaneous layers to increase volume, with clinical studies reporting sustained results for 12-18 months and high patient satisfaction rates exceeding 80%, alongside a favorable safety profile with rare adverse events. Exercises like squats effectively tone the buttocks by activating the gluteus maximus muscle, with electromyography evidence showing peak activation levels up to 100% of maximum voluntary contraction during deep squat variations, contributing to improved firmness over consistent training periods. Botox injections into the gluteus maximus can address muscle hypertrophy by inducing temporary atrophy, reducing bulk in cases of disproportionate enlargement, with effects lasting 3-6 months and reversible outcomes.^[101]^[102]^[103] Despite their benefits, these interventions carry notable risks. BBL procedures have an overall complication rate of approximately 6.8%, including fat embolism, which can lead to pulmonary issues and has prompted urgent warnings from plastic surgery societies since 2017 due to mortality rates estimated at 1 in 3,000. Infection rates for gluteal augmentations range from 1.9% to 5%, often managed with antibiotics but potentially requiring implant removal or graft revision. Implants exhibit higher complication incidences, up to 31%, encompassing seroma, capsular contracture, and migration. Patient selection, surgeon expertise, and adherence to safety guidelines, such as avoiding deep intramuscular fat injection, are critical to mitigating these outcomes.^[104]^[105]^[106]

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Apr 1, 2023 · When all ethnicities were combined the mean values for LL, SS, PT, and PI were: 47.4° (SD 11.0°), 35.8° (SD 7.8°), 14.0° (SD 7.2°), and 48.8° ( ...
[19]
Characteristics of Sagittal Spino-Pelvic Alignment in Japanese ... - NIH
Oct 18, 2014 · Japanese young adults apparently have smaller PI and LLA values than Caucasian people. When making decisions for optimal sagittal spinal ...Missing: average ethnicity
[20]
Anatomy, Abdomen and Pelvis: Superior Gluteal Nerve - NCBI - NIH
Aug 14, 2023 · The superior gluteal nerve is found in the lower pelvis and arises from the dorsal divisions of the L4, L5, and S1 nerve roots of the sacral plexus.Introduction · Structure and Function · Muscles · Surgical Considerations
[21]
Inferior gluteal nerve: origin, course and function - Kenhub
Inferior gluteal nerve is a branch of the sacral plexus that innervates the gluteus maximus muscle. Learn more about its anatomy on Kenhub!Origin And Course · Branches And Innervation · Clinical Relations
[22]
The Sacral Plexus - Spinal Nerves - Branches - TeachMeAnatomy
The sacral plexus is a network of nerve fibres that supplies the skin and muscles of the pelvis and lower limb.The Branches · Superior Gluteal Nerve · Sciatic Nerve
[23]
Posterior femoral cutaneous nerve: Origin and function | Kenhub
Apr 17, 2024 · The posterior femoral cutaneous nerve, also known as the posterior cutaneous nerve of the thigh, is a sensory branch of the sacral plexus.
[24]
Superior Gluteal Artery - Course - Supply - TeachMeAnatomy
The superior gluteal artery is a terminal branch of the internal iliac artery. It contributes to the blood supply of structures within the pelvis and gluteal ...
[25]
Inferior Gluteal Artery - Physiopedia
The inferior gluteal artery, a branch of the internal iliac, supplies the gluteal and thigh regions, and the sciatic nerve. It runs through the greater sciatic ...
[26]
Superior Gluteal Veins | Complete Anatomy - Elsevier
The superior gluteal vein enters the pelvis via the greater sciatic foramen, superior to piriformis muscles. They drain into the internal iliac vein.
[27]
Anatomy of pelvic lymph nodes and vessels - Kenhub
Internal iliac lymph nodes are located along the internal iliac arteries and receive lymph from all of the pelvic viscera, parts of the perineum and the gluteal ...
[28]
Effect of hip joint angle at seat-off on hip joint contact force during sit ...
Nov 29, 2018 · The hip joint contact force during the sit-to-stand movement increased approximately linearly as the hip flexion angle at the seat-off increased.
[29]
Gluteus Maximus - Physiopedia
Gluteus maximus and the hamstrings work together to extend the trunk from a flexed position by pulling the pelvis backward,eg standing up from a bent forward ...
[30]
Trendelenburg Gait - StatPearls - NCBI Bookshelf - NIH
To prevent the drop, the abductor muscles, mainly the gluteus medius and minimus on the supported side contract, providing stabilization of the superimposed ...
[31]
Rock-Solid Glutes: Boost Your Athletic Prowess & Stay Injury-Free!
Jun 17, 2024 · The Gluteus Maximus Muscle · It is highly active at the beginning of the stance phase and the end of the swing phase in running gait, which ...
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Gluteus Maximus Activation during Common Strength and ... - NIH
This systematic review aimed to describe the GMax activation levels during strength exercises that incorporate hip extension and use of external load.
[33]
Prevention of deep tissue injury through muscle contractions ... - NIH
In people with intact and injured spinal cords, 61 and 70% of body weight, respectively, is carried by both ischial tuberosities and thighs while sitting (15, ...Missing: bearing | Show results with:bearing<|separator|>
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Stiffening of the gluteal muscle increased the intramuscular stress
The ischial tuberosity, the muscle, and the fat ... fat thickness remarkably influences contact pressure and load distribution of buttock in seated posture.Missing: bearing | Show results with:bearing
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The relationship between pressure offloading and ischial tissue ...
Oct 1, 2019 · The ischial tuberosity (IT) is the major weight bearing bone during sitting and is a common site for PI development since it bears the ...
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Muscles of the Pelvis and Perineum - UAMS College of Medicine
Muscles of the Pelvis and Perineum ; anal sphincter, internal, encircles the anal canal, encircles the anal canal, constricts the anal canal ; bulbospongiosus, in ...<|separator|>
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Hypodermis (Subcutaneous Tissue): Anatomy and Function
Sep 16, 2025 · ... buttocks.3. Structure. The hypodermis is a complex structure composed of ... Adipose tissue: Also known as body fat, these are fatty tissues ...Missing: thermoregulation | Show results with:thermoregulation
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The molecular and metabolic program by which white adipocytes ...
Exposure of cultured adipocytes and gluteal white adipose tissue (WAT) to cool temperatures activates a shared program of gene expression. Cool temperatures ...
[39]
Waist-hip ratio and cognitive ability: is gluteofemoral fat a privileged ...
Each cycle of pregnancy and lactation draws down the gluteofemoral fat store deposited in early life; in many poorly nourished populations, this fat is not ...
[40]
Sex Differences in Adipose Tissue Function - PMC - PubMed Central
Women have more subcutaneous fat, especially in gluteofemoral region, while men accumulate more visceral fat. Women show more adipocyte hyperplasia, men more ...
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Buttocks - Etymology, Origin & Meaning
Originating from Old English buttuc, meaning "end" or "short land piece," this word denotes the two protuberances forming the rump in men and animals.
[42]
Bum - Etymology, Origin & Meaning
"Bum" originates from late 14th-century onomatopoeic roots meaning "buttocks" and evolved in 19th-century American English to mean "loafer" or "poor quality ...
[43]
Rear - Etymology, Origin & Meaning
Rear (n. & v.) originates from Anglo-French and Old English, meaning "hindmost part" and "to raise or attack from behind," combining concepts of guarding ...
[44]
Ass - Etymology, Origin & Meaning
Entries linking to ass. arse(n.) "buttocks, hinder part of an animal," Old English ærs "tail, rump," from Proto-Germanic *arsoz (source also of Old Saxon ...
[45]
Arse - Etymology, Origin & Meaning
Originating from Old English ærs and Proto-Germanic *arsoz, this word means "buttocks" or "hind part," tracing back to the PIE root *ors- for "backside."
[46]
Gluteal region: Anatomy and location - Kenhub
Apr 4, 2024 · Synonym: Buttocks Latin: Regio glutea. Synonym: Clunes, Nates, Regio glutealis. Definition, The gluteal region is located inferior to the lower ...Missing: word | Show results with:word
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French Translation of “BUTTOCKS” | Collins English-French Dictionary
Oct 27, 2025 · In other languages. buttocks ; American English: buttocks /ˈbʌtəkz/ ; Arabic: أَرْداف ; Brazilian Portuguese: nádegas ; Chinese: 臀部 ; Croatian: ...Missing: Swahili | Show results with:Swahili
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BUTTOCKS - Translation in German - bab.la
buttocks {plural} ; Arsch {m} [vulg.] · (also: booty, fucker, arse, jerk, dickhead, wazoo, prat, jacksie, ass, ass) ; Hintern {m} [coll.] · (also: booty, rear, ...
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How to say buttocks in Swahili - WordHippo
More Swahili words for buttocks. matako noun. behind, bum. Find more words! Another word for, Opposite of, Meaning of, Rhymes with, Sentences with, Find word ...
[50]
BUTTOCKS - Translation in Swahili - bab.la
Synonyms (English) for "buttocks": · arse · ass · backside · behind · bottom · bum · buns · butt ...
[51]
Synonyms of 'posterior' in British English - Collins Dictionary
Synonyms for POSTERIOR: bottom, behind, bum, seat, rear, tail, butt, ass ... buttocks,. behind (informal),. seat,. bottom (informal),. rear (informal) ...
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Steatopygia and the modern Venus - San Francisco Bay View
Mar 31, 2023 · Steatopygia, from the Greek “steato” meaning fat and “pygia” meaning buttocks, is a unique genetic feature seen in the ancient Khoisan people of ...
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Tattooing, Gender and Social Stratification in Micro-Polynesia - jstor
Tattoos were applied to the buttocks, genital area and upper thighs. Tattooing was compulsory and rituals were focused on a girl of high rank accompanied by ...
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Big Butts to Skinny Butts – Trends Throughout the Years
Rating 4.9 (605) As the 1900's started, the trending butt style was round and prominent. The ideal Women Buttocks was considered a “Gibson Girl” named after famous ...
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"Universal" and Ethnic Ideals of Beautiful Buttocks Are ... - PubMed
"Universally" perceived ideal buttocks are 1.4 times the circumference of the waist, which is consistent cross-culturally and throughout history. ... Beauty* ...
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The Secret History of Holywell Street: Home to Victorian London's ...
Jun 29, 2016 · Victorian sexuality is often considered synonymous with prudishness, conjuring images of covered-up piano legs and dark ankle-length skirts.
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Let Us Cook With This List Of Slang Trends That Explain 2024
Jan 26, 2024 · Gyatt is most commonly used as an exclamation in reaction to seeing a large butt (that is, the buttocks) and may be used as a noun to mean a ...
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A juicy new book explores the cultural history of the butt - CNN
Feb 10, 2023 · “Butts, silly as they may often seem, are tremendously complex symbols, fraught with significance and nuance, laden with humor and sex, shame ...
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Preferred waist-to-hip ratio and ecology - ScienceDirect.com
Female waist-to-hip ratio (WHR) is widely cited by evolutionary psychologists as an example of an evolved male preference. Although many studies have found ...
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Female body attractiveness more about curviness than waist-to-hip ...
Nov 8, 2024 · A lower waist-to-hip ratio, typically around 0.7, is often linked to higher attractiveness ratings. Evolutionary psychologists suggest this ...
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#BodyPositive? A critical exploration of the body positive movement ...
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Venus Figurines of the European Paleolithic: Symbols of Fertility or ...
Jan 3, 2012 · The breasts and buttocks of Venus figurines are often exaggerated in size. Some are perceived as being pregnant or possibly pregnant, and ...
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[PDF] The Statue That Started It All: The Aphrodite of Knidos
64 Praxiteles created the canon for the female standing nude, using the contrapasso pose and the harmony of proportion, which artists in the Renaissance used in ...
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Lewis Lapham: Michelangelo Made Art Sexy - Bloomberg.com
Feb 8, 2013 · Graceful backs, smooth buttocks, muscular arms and legs entwine in one great intimate pile of sensual masculine flesh. Michelangelo was ...
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Botticelli's Birth of Venus - ItalianRenaissance.org
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PLASTIC ASPECTS OF AFRICAN SCULPTURE: - The Theory of - jstor
characterized by exaggeration of breasts and buttocks, connoting not only female attributes, but also fertility. The emphasis on these female.
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Peter Paul Rubens Paintings, Bio, Ideas - The Art Story
Sep 2, 2018 · Rubens' signature portrayal of the female form was coined "Rubenesque," a term that remains widely recognized today to describe voluptuous nudes ...Missing: fleshy | Show results with:fleshy<|separator|>
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Reassessing the Butt Shot | Film Quarterly - UC Press Journals
Jun 1, 2025 · ... 1980s action movies frequently objectified their celebrity ... butt shots never transcend sexual objectification. Indeed, Coralie ...Missing: aerobics | Show results with:aerobics
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How Jennifer Lopez Inspired Me to Embrace My Curves - Oprah Daily
Jul 22, 2019 · She was the first Latina to be celebrated for having what many would call a curvier shape and/or normal body and being perfectly comfortable in it.
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All 51 of Jennifer Lopez's music videos, ranked from worst to best
Jul 24, 2022 · "Booty" featuring Iggy Azalea (2014) ... The video starts with an unnecessarily big build-up to a shot of a woman's butt in a bikini. As the song ...
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How High Can High-Waisted Pants Go? | The New Yorker
Nov 12, 2019 · Rachel Syme writes about the renewed popularity of high-waisted pants and discusses garments offered by the brands Levi's, the Gap, Rolla's, ...
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The 25 Best High-Waisted Jeans of 2025, Expert-Approved - InStyle
Oct 28, 2025 · Accentuate your curves and elongate your legs with our roundup of the best high-waisted jeans, from skinny to wide-leg to curvy styles.
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People Are Contouring Their Butts Now, and We Have So ... - Glamour
Apr 12, 2016 · Our final verdict: Butt contouring is not fit for real life. And we're honestly a little worried about what contouring trend could possibly come next.
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The rise of Lululemon: How America became a nation of yoga pants
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Latest social media trend is all about the booty - AOL.com
Jul 12, 2014 · A new trend that's sweeping the self-obsessed Internet world is bearing a different set of cheeks. It's called a belfie and incase the picture doesn't spell it ...
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Victoria's Secret faces Facebook backlash after editing out butt cheek
Oct 9, 2015 · But(t), its followers noticed that she was missing the curvature of her left butt cheek, prompting a wave of concerned responses. “I don't think ...
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Victoria's Secret Fashion Show Promotes Inclusivity in 2025 - Achona
Oct 29, 2025 · ... inclusivity by featuring a more diverse set of models, which include women of different body types, ages, and ethnicities. This past year ...Missing: 2020s | Show results with:2020s
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Victoria's Secret works to be a better model of brand inclusivity
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11 Fashion Brands Doing Body Positivity Right - The Luupe
These brands bring body positivity to a new level, creating sustainable, inclusive clothing for people of all sizes.Missing: 2020s buttocks
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Piriformis Syndrome - StatPearls - NCBI Bookshelf - NIH
Piriformis syndrome may be responsible for 0.3% to 6% of all cases of low back pain and/or sciatica. With an estimated amount of new cases of low back pain ...
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Tendinopathy - Symptoms and causes - Mayo Clinic
Mar 22, 2025 · Gluteal tendinopathy. This condition is caused by ... Causes may include overuse, injury, being overweight and hormone changes.
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Current and future advances in practice: tendinopathies of the hip
Apr 10, 2024 · Occupational and sport-related factors such as overuse, sudden increase in intensity of activity, inadequate recovery, highly repetitive ...
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Pilonidal Cyst and Sinus - StatPearls - NCBI Bookshelf
Epidemiology. The incidence of pilonidal disease is estimated to be 26 per 100,000 people and affects men 2.2 times more than women.[5] It is estimated that ...
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Cellulite: Current Understanding and Treatment - PMC - NIH
Occurring in 80% to 90% of females, mostly on the thighs, buttocks, and hips, it is associated with profound negative psychosocial and quality of life issues.
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Folliculitis - Symptoms & causes - Mayo Clinic
Aug 31, 2022 · Folliculitis is a common skin condition that happens when hair follicles become inflamed. It's often caused by an infection with bacteria.
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Interventions for bacterial folliculitis and boils (furuncles and ...
Aug 15, 2018 · A boil appears as a painful red swelling around the follicular opening and may progress to form an abscess (Craft 2012). Some boils may be ...
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Pressure Ulcer - StatPearls - NCBI Bookshelf
Jan 3, 2024 · Stage 4: Full-thickness skin loss extends through the fascia with considerable tissue loss. There may be muscle, bone, tendon, or joint ...
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Bedsores (pressure ulcers) - Symptoms and causes - Mayo Clinic
Feb 22, 2024 · Bedsores are injuries to the skin and the tissue below the skin that are due to pressure on the skin for a long time.
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Muscular Hematoma - StatPearls - NCBI Bookshelf
Muscular hematomas are in simple terms defined by bleeding within a muscle group. These muscular hematomas may be traumatic or spontaneous.
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Sciatica - Symptoms and causes - Mayo Clinic
Jan 31, 2024 · Sciatica pain can be almost anywhere along the nerve pathway. It's especially likely to follow a path from the low back to the buttock and the ...
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Limberg flap reconstruction for the treatment of pilonidal sinus disease
We conducted this case review to evaluate the validity of Limberg flap reconstruction method in the treatment of chronic recurrent pilonidal disease.
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Gluteal V-Y Advancement Fasciocutaneous Flap for Treatment of ...
We describe the application of the fasciocutaneous V-Y advancement flap for reconstruction of defects after radical excision of recurrent pilonidal sinus in 11 ...<|separator|>
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A double-split gluteus maximus muscle flap for reconstruction of the ...
A double-split gluteus maximus muscle flap has been described as a method for reconstructing difficult cases of rectal sphincter disruption secondary to trauma.Missing: post- | Show results with:post-
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Dual Reconstruction of Lumbar and Gluteal Defects with Freestyle ...
Jan 26, 2021 · A freestyle propeller perforator-based flap combined with a gluteus maximus muscle flap is a solution that provides well-padding over bony ...
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[PDF] 2023 Plastic Surgery Statistics | Cosmetic Procedure Trends
Buttock augmentation with fat grafting** (Brazilian butt lift). 29,383. 28,638 ... ** Counts of procedures performed by ASPS Member Surgeons only.
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Subfascial/Intramuscular Dual-Plane Gluteal Implantation ... - PubMed
Nov 16, 2023 · Other complications included dehiscence, seroma, capsular contracture, and implant migration. Conclusions: The SF/IM gluteal implantation ...
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Body contouring with solid silicone implants - PubMed
Poor implant placement techniques result in greater complications such as asymmetry, implant migration, capsular contracture, and infection.
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Stabilized hyaluronic acid gel for volume restoration and contouring ...
Jan 24, 2014 · Conclusions: The data show that stabilized HA gel is a safe and effective treatment for temporary aesthetic augmentation of the buttocks.Missing: fillers | Show results with:fillers
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Comparison Between Back Squat, Romanian Deadlift, and Barbell ...
... exercises performed with the same load (60 kg) and at one repetition maximum (1RM) ... Buttocks; Electromyography; Exercise / physiology; Hamstring Muscles ...Missing: toning | Show results with:toning
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Botox to reduce buttocks | Cosmetic dermatology Elm Clinic
This is a slimming treatment that uses Botox injections to shrink the buttock muscles and make the buttocks smaller.At Elm Clinic, we offer a variety of ...Missing: hypertrophy | Show results with:hypertrophy
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Differences in Complication Rates of Gluteoplasty Procedures That ...
The overall complication rate was 12.4%. Implants had the highest rate (31.4%), whereas fat grafting had the lowest (6.8%); flaps were intermediate (23.1%).
[102]
Plastic Surgery Societies Issue Urgent Warning About the Risks ...
Aug 6, 2018 · Gluteal fat grafting, more commonly referred to as the popular Brazilian Butt Lift (BBL) procedure, has resulted in an alarming rate of mortality.
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Necrotizing Soft Tissue Infection as a Result of a Brazilian Butt
Surgical infections range from 1.9% to 5% of the total complication rate for gluteal augmentation, including both superficial and deep infections.