Physical attractiveness: analysis of buttocks patterns for planning body contouring treatment

Pilot Study: Hourglass Technique for Male Gluteal Enhancement

Background

The aesthetic demand for male gluteal augmentation is increasing; however, most existing techniques are designed for female anatomy, risking undesired feminization in male patients. This pilot study proposes the "hourglass technique" using hyaluronic acid (HA) fillers as a minimally invasive approach to enhance male gluteal contours while preserving masculine features.

Methods

A total of 10 male patients 20-45 years of age underwent gluteal augmentation using a cross-linked HA filler (UP Max, Ilikia, CGBio). The hourglass technique targets 3 anatomical regions-upper pole, projection, and lower pole-while avoiding the trochanteric depression ("no touch area") to maintain natural contours. Injections were performed with an 18G cannula in the superficial subcutaneous plane. Safety, tolerance, and aesthetic outcomes were assessed clinically and via photographic documentation up to 30 days postprocedure.

Results

All patients demonstrated enhanced gluteal definition and projection with the preservation of masculine traits and no feminization. No adverse events were reported, aside from mild localized pain and bruising. Results were stable and aesthetically satisfactory at the 30-day follow-up.

Conclusions

The hourglass technique with HA fillers is a safe, effective, and reproducible option for subtle male gluteal enhancement. It preserves masculine anatomy and offers a minimally invasive alternative to surgery, warranting further investigation in studies with longer follow-up and larger samples.

Single Session of Calcium Hydroxylapatite, Incobotulinumtoxin A, and Hyaluronic Acid for Gluteal Aesthetic Improvement

BACKGROUND

While various techniques exist to treat the buttocks, few combine multiple products in a single session, offering both aesthetic and logistical benefits.

AIMS

To evaluate the aesthetic improvement of the buttocks in patients treated with a combination of calcium hydroxylapatite-carboxymethylcellulose (CaHA-CMC), Incobotulinumtoxin A (IncoBoNT-A), and cohesive poly-densified matrix hyaluronic acid (CPM-HA V) in one session.

PATIENTS/METHODS

This retrospective observational study involved women aged from 35 to 55 years who underwent the combined technique. Data were collected from the patient's charts, and photos were taken before treatment, and at 30 and 90 days post-procedure. Two independent physicians evaluated cellulite (5-point scale) and flaccidity (4-point scale) in all patients. Aesthetic improvements were assessed by patients and physicians using the GAIS (5-point) scale.

RESULTS

Ten women aged 45.3 (±5.2) years participated. Initially, 80% presented moderate to severe flaccidity, and 30% and 90% presented moderate to very severe cellulite in relaxed and contracted buttocks, respectively. After 90 days, flaccidity improved in 9/10 patients, and cellulite in 4/10 and 9/10 patients in static and dynamic assessments, respectively. There was a moderate correlation between the assessments at baseline and after 90 days. The aesthetic appearance of the buttocks was rated as much improved or very much improved by 100% of the patients and 60% of the physicians after 90 days.

CONCLUSION

A single-session combined application of CaHA-CMC, IncoBoNT-A, and CPM-HA effectively improved flaccidity and cellulite, resulting in high patient satisfaction.

Aesthetic results in twin case undergoing transverse abdominoplasty versus Fleur-de-Lis abdominoplasty after massive weight loss

This identical twin case demonstrates the aesthetic differences of two different body contouring procedures in alike patients. Body contouring improves physical, psychosocial, and sexual function therefore providing the best possible aesthetic outcome for massive weight loss patients is important. The Fleur-de-Lis pattern should be strongly considered when dealing with moderate to significant horizontal skin excess of the abdomen to obtain the best possible contouring and create an attractive female contour of hip and waist.

Eye-Tracking Insights into the Perception of Buttocks

BACKGROUND

Aesthetic enhancements to the buttock region have grown in demand due to media influence and evolving beauty standards. Using eye-tracking technology, we sought to uncover subconscious visual preferences regarding the buttock aesthetic. The objective of this investigation was to assess visual gaze patterns in assessing female buttocks among Caucasian and Asians through eye-tracking technology.

MATERIALS AND METHODS

67 participants viewed photographs of buttocks from various angles, and eye movements were analyzed using the Tobii Pro Nano eye-tracker.

RESULTS

Males fixated on the intergluteal cleft for 0.96 ± 1.1 s and the thigh gap for 0.07 ± 0.2 s; while, females fixated for 0.81 ± 0.9 s and 0.06 ± 0.2 s on the same regions, respectively. Significant gender differences were observed in the intergluteal cleft (p = 0.002) and upper lateral buttock (p < 0.001).

CONCLUSION

This study offers new insights into the observation of buttocks. The consistent attention toward the intergluteal cleft across demographics could be of potential significance in the aesthetic perception of buttocks. However, diverse gaze patterns also underscore the multifaceted nature of human attraction. These findings hold implications for plastic surgery, aesthetic medicine, and the sociocultural understanding of beauty. A deeper dive into aesthetic preferences is pivotal for a holistic understanding of human perceptions of attractive buttocks.

LEVEL OF EVIDENCE III

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to Table of Contents or the online instructions to Authors www.springer.com/00266 .

Gluteal Fold: Cadaveric Dissection of the Superficial Fascial System in the Buttock and Anatomy-Based Gluteal Liposculpture

BACKGROUND

The anatomy and formation mechanism of the gluteal fold (GF) remain unclear. Given that understanding the anatomy of the superficial fascial system (SFS) may facilitate the improvement of liposuction techniques, this study aimed to clarify and define the anatomical components of the GF.

METHODS

A total of 20 fresh female buttocks and thighs were dissected sagittally to observe the changes of the SFS along the GF and were dissected horizontally to observe the SFS on the upper, middle, and lower levels of the buttock.

RESULTS

Through these dissections, 2 patterns of the SFS in the GF region were identified. The retinaculum cutis (RC)-dominant SFS, named the fascial condensation zone, features an extremely dense and tough RC, originating from the bony structures (eg, the ischium) and radially anchored by the dermis. The fat-dominant SFS features a classic double-layered SFS structure. The RC-dominant SFS is mainly distributed at the medial GF, thus forming the depressed fold. It gradually disappears along the GF and the SFS becomes fat-dominant, making the fold increasingly less visible. At the lateral buttock, the SFS of the buttock and thigh reach an identical status in terms of morphologic features, showing a smooth curve between the buttock and the thigh instead of a fold. Thus, based on these findings, different liposuction methods were formulated to manage GF contouring.

CONCLUSIONS

The SFS of the GF region shows a regional variation pattern. Topographic anatomy of the SFS in the GF region helps us understand GF contour deformities and provide an anatomical basis for surgical correction.

Analysis of the Thigh Aesthetic Profiles: One of Physical Ideal Body Proportions

BACKGROUND

The contour of the thigh is increasingly being recognized as crucial component of the ideal human physique, giving rise to heightened interest in attaining the perfect thigh profile. Notwithstanding, the contemporary landscape of cosmetic surgery appears to be bereft of efficient and precise objective methodologies to evaluate the outcomes of thigh contouring treatments. The present study is aimed to investigate the aesthetic appeal of varying thigh contours, employing specialized software as an indispensable instrument for quantitative and qualitative analysis.

METHODS

Standardized photographs of the lower body were obtained from a sample of 200 healthy volunteers. A linear analysis was conducted, examining aspects such as the vertical length and transvers width of the thigh, as well as angular measurements including the posterior gluteal angle (PGA) and lateral angle thigh (LAT). Variables relating to thigh measurements and body mass index (BMI) were documented, with the relationships between them ascertained through Pearson's correlation and regression analysis.

RESULTS

In males, the LAT was measured at 168 ± 3.9, and the PGA at 170 ± 3.4, while in females, these measurements were 166 ± 2.8 ve 166 ± 2.8, respectively. Linear analyses, including the vertical length of thigh (VLT), transverse width of thigh (TWT), lateral width (LW), and posterior width (PW), were conducted. Based on the LW inferior/LW superior ratio values, the most commonly observed thigh types were Type III (0.90) at 45% and Type II (0.85) at 24.75% while the least common was Type V at 4% (0.99). PW inferior/PW superior was 84.7%. The PWI/PWS ratio was highest for Type V, at 0.99, accounting for 84.70% of the total. Furthermore, an increase in the LWI/LWS ratio leads to an increase in the PWI/PWS ratio.  The frequency of the VLT/TW1 ratio 0.31-0.35 (Type 3) was found to be on the left side and Type 4 on the right side. A strong correlation was found between BMI and all thigh indexes, with a significant positive correlation between the index and factors tied to the buttocks and upper thigh.

CONCLUSIONS

The concept of an ideal thigh may vary based on an individual's gender, race, country of residence, and self-esteem, aiming to achieve a more natural silhouette. Focusing on the different ratios of hip and thigh varieties in the study is quite intriguing. Further inquiry and rigorous exploration are warranted to delineate the optimal techniques and methodologies for attaining ideal thigh proportions.

LEVEL OF EVIDENCE IV

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Aesthetically Ideal Breasts Created With Artificial Intelligence: Validating the Literature, Racial Differences, and Deep Fakes

Background

A female's breasts are integrally tied to her identity and sense of femininity. Despite extensive study of breast aesthetics, there is no discrete formula for the "ideal breast" to guide the aesthetic surgeon. Racial and cultural differences heavily influence preferences in breast morphology. Artificial intelligence (AI) is ubiquitous in modern culture and may aid in further understanding ideal breast aesthetics.

Objectives

This study analyzed AI-generated images of aesthetically ideal breasts, evaluated for morphologic differences based on race, and compared findings to the literature.

Methods

An openly accessible AI image-generator platform was used to generate images of aesthetically ideal Caucasian, African American, and Asian breasts in 3-quarter profile and frontal views using simple text prompts. Breast measurements were obtained and compared between each racial cohort and to that of previously described ideal breast parameters.

Results

Twenty-five images were analyzed per racial cohort, per pose (150 total). Caucasian breasts were observed to fit nicely into previously described ideal breast templates. However, upper-to-lower pole ratios, nipple angles, upper pole slope contours, nipple-areolar complex positions, and areolar size were observed to have statistically significant differences between racial cohorts.

Conclusions

Defining the aesthetically ideal breast remains a complex and multifaceted challenge, requiring consideration of racial and cultural differences. The AI-generated breasts in this study were found to have significant differences between racial groups, support several previously described breast ideals, and provide insight into current and future ethical issues related to AI in aesthetic surgery.

Level of Evidence 5

Buttocks Beautification 3D with Calcium Hydroxylapatite (RadiesseTM): An Individualized Approach to Diagnosing and Treating Contour, Sagging, and Cellulite of the Buttocks in Seven Cases

Background

The demand for body procedures is increasing, and buttocks beautification is one of the most sought-after procedures in dermatological and plastic surgery clinics. Several aspects affect the beauty of this area, including sagging, cellulite, contour irregularity, and volume reduction. This makes treatment of the area more challenging. Calcium hydroxylapatite (CaHA), which may be injected into the buttocks, stimulates local neocollagenesis, provides volume replacement, increases the strength and elasticity of the dermis, and thickens the underlying superficial fascia. However, no protocol for buttocks beautification tailors the dilution and deep application of CaHA filler simultaneously according to clinical assessments and personal priorities regarding contour, sagging, and cellulite.

Purpose

To report the results of a minimally invasive protocol using different dilutions of CaHA (Buttocks Beautification 3D) in the buttocks with application in different planes. The treatment was performed according to a previous individualized evaluation to improve the area aesthetically.

Patients and methods

Six women and one man were submitted to the protocol. An assessment was performed to determine the shape, sagging, cellulite (in women), and patients' preferences for buttocks beautification. The dilution, volume, depth, and injection technique for CaHA were based on these assessments. The results of the treatment were then assessed using standardized photographs and patient satisfaction.

Results

We reported favorable results in six women and one man with different grades of sagging, female cellulite, and shapes of the gluteal region who were treated with CaHA injections according to a tailored protocol. All participants reported high satisfaction with the procedure.

Conclusion

Highly satisfactory results were achieved in seven adult patients who were assessed and treated for the buttocks with CaHA using an individualized protocol. Prospective studies should be performed to corroborate our findings and optimize the use of Buttocks Beautification 3D as a reliable modality of treatment for this body area.

Cosmetic Surgery and the Diversity of Cultural and Ethnic Perceptions of Facial, Breast, and Gluteal Aesthetics in Women: A Comprehensive Review

An increasing number of people are opting for cosmetic surgeries. For many years, the physical and aesthetic appearance of Caucasians has been considered to be ideal. However, it is now commonly acknowledged that attractiveness and aesthetic standards vary among cultural backgrounds and ethnic groups and that Western attractiveness criteria no longer apply to all. Herein, we conducted a comprehensive review of studies that examined cultural and ethnic variations in preferences for facial, breast, and gluteal aesthetics, as well as reviewed studies that investigated ethnic disparities in attitudes and motivations for cosmetic surgery. A total of 4532 references were identified, 66 of which met the inclusion criteria. Several studies have reported that facial golden ratios are invalid for representing perceived attractiveness standards among different ethnicities. The majority of studies also indicated that facial aesthetic interventions should not aim to Westernize but to optimize ethnic traits. Significant ethnic differences in preferences for upper- and lower-pole breast proportions have been reported. The size of the buttocks and waist-to-hip ratio were identified as the main factors of buttock aesthetics, with buttock size preferences having a high ethnic diversity. Interest in cosmetic surgical procedures while maintaining ethnic identity continues to grow among young women worldwide. This comprehensive review strongly suggests that accommodating cultural and ethnic differences in aesthetic standards in cosmetic surgery planning can lead to more acceptable cosmetic outcomes.

Artificial Intelligence-Enabled Simulation of Gluteal Augmentation: A Helpful Tool in Preoperative Outcome Simulation?

BACKGROUND

While the buttock region is considered an esthetic hallmark, the Brazilian butt lift (BBL) remains controversially discussed in the plastic surgery community. This is due to its contentious safety profile. Thus, informed consent and patient education play a key role in preoperative planning. To this end, we aimed to program an easy-to-use, widely accessible, and low-budget algorithm that produces reliable outcome simulations.

METHODS

The conditional generative adversarial network (GAN) was trained using pre- and postoperative images from 1628 BBL patients. To validate outcome simulation, 25 GAN-generated images were assessed deploying 67 Amazon Mechanical Turk Workers (Mturks).

RESULTS

Mturks could not differentiate between GAN-generated and real patient images in approximately 49.4% of all trials.

CONCLUSION

This study presents a free-to-use, widely accessible, and reliable algorithm to visualize potential surgical outcomes that could potentially be applied in other fields of plastic surgery.

Dynamic ultrasound evaluation of body fillers and biostimulators in the buttocks of fresh-frozen specimen

BACKGROUND

Ultrasound imaging is a useful tool to study the injection of fillers and biostimulators in the body.

OBJECTIVE

Sonographically evaluate real-time injections of fillers and biostimulators and describe their behavior in the subcutaneous tissue of the buttocks of fresh-frozen specimen.

METHODS

injection of two brands of high-density hyaluronic acid (HA), one brand of calcium hydroxyapatite (CaHA), one brand of hybrid injectable (CaHa + HA), one brand of polycaprolactone (PCL) and three brands of poly-l-lactic acid (PLLA) were performed in the subcutaneous tissue of the gluteal region under ultrasonography visualization on a fresh-frozen specimen. Videos during injection and static images immediately after injection were obtained. The sonographic aspects of the substances and their dispersion and interaction with the surrounding tissues were described.

RESULTS

Real-time ultrasound showed different dispersion patterns of the two brands of HA, CaHA, hybrid injectable (CaHa + HA) and the three brands of PLLA. The sonographic aspects among the brands of PLLA were also different.

CONCLUSIONS

The dynamic ultrasound evaluation of the injection of HA, CaHA, hybrid injectable (CaHa + HA), PCL and PLLA in a fresh-frozen specimen shed some light on their aspects and dispersion pattern in the buttock. If these patterns are confirmed in further studies in vivo, there will be a positive impact on the selection and development of safer and more effective techniques to enhance buttock contour.

Collagen Stimulators in Body Applications: A Review Focused on Poly-L-Lactic Acid (PLLA)

The number of aesthetic procedures performed worldwide continues to grow together with an increase in the population seeking the restoration or preservation of a youthful appearance. Requests for non-surgical body rejuvenation are increasing. Patients are looking for safe and effective minimally invasive aesthetic procedures. Soft-tissue dermal fillers can meet these expectations. Based on the beneficial outcomes of these treatments in many facial areas, a new trend is developing to target body areas. Different dermal fillers are available and include collagen stimulators initially developed to restore facial volume. Furthermore, they are associated with long-lasting efficiency, a high level of patient satisfaction and a good safety profile, with mainly minor adverse events reported. In appropriate conditions of use, they are now used for body rejuvenation in clinical practice. Their use is expanding and allows addressing various issues including volume loss, skin laxity, cellulite, striae distensae and wrinkles. This review focuses on poly-L-lactic acid (PLLA), used in the first collagen stimulator and one of the most investigated in facial and in off-facial body applications. The available published data, although still limited, are presented by body area, neck and chest, buttocks, abdomen, upper arms, thighs, knees, and hands. Key features of the concerned zones and the main clinical signs affecting the body part as well as the injection modalities are provided along with the aesthetic results. This represents the state of the art on which to base further developments necessary for optimal and safe outcomes of treatment with the PLLA-based collagen stimulators and others in this class for body rejuvenation.

What is Beauty?

PURPOSE

In the current study, the authors attempt to thoroughly investigate the concept of beauty from different perspectives in different historical periods and offer their personal thoughts about it.

METHODS

The authors performed a comprehensive and across-the-board literature review about 'beauty', including beauty from a philosophical perspective, beauty perception by human mind, beauty from a biopsychological perspective, beauty of the face, body and breast, models of beauty and beauty in cosmetic surgery.

RESULTS

From Plato to modern neuro-psychological studies, the concept of beauty has always been a theme for adamant debates and passionate thoughts. Different aspects of beauty, from intellectual to pure physical, have received a tremendous amount of attention. The true definition of the concept of beauty is still ambiguous, and there is not a unanimous explanation for it. It seems that the definition of beauty differs in every individual's mind and over the history of humankind.

CONCLUSION

Although beauty is a very important concept and the seek for achieving it is a very natural behavior, one must remember that the importance of beauty should not overshadow the fact that every human being is made up of similar internal organs. We strongly encourage the reader to look beyond the hedge, to be aware that each of us is made up of internal organs, beyond the external appearance. Level of Evidence V This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine Ratings, please refer to Table of Contents or online Instructions to Authors www.springer.com/00266.

Relationship Between Sexual Function and Pelvic Floor and Hip Muscle Strength in Women With Stress Urinary Incontinence

INTRODUCTION

The pelvic floor muscle (PFM) could affect female sexual functions. The hip muscles are morphologically and functionally linked to PFM and are important elements of female sexual attraction.

AIM

To determine the relationship between female sexual function and hip muscle strength and PFM functions in women with stress urinary incontinence (SUI).

METHODS

A total of 42 women with SUI were recruited in this study. Female sexual function was measured using the pelvic organ prolapse urinary incontinence sexual function questionnaire (PISQ). PFM functions were measured using a perineometer. Hip muscle strength was measured using a Smart KEMA tension sensor. The relationship between female sexual function and PFM function and hip muscle strength was assessed using Pearson correlation coefficients and multiple regression analyses with forward selection.

MAIN OUTCOME MEASURES

PISQ score, PFM functions (strength and endurance), and strength of hip extensor, abductor, and adductor were the main outcome measures.

RESULTS

For the behavioral/emotive domain in the PISQ, hip extensor strength (r = 0.452), PFM strength (r = 0.441), PFM endurance (r = 0.362), and hip adductor strength (r = 0.324) were significantly correlated and hip extensor strength emerged in multiple regression. For the physical domain in the PISQ, hip abductor strength (r = 0.417), PFM endurance (r = 0.356), hip adductor strength (r = 0.332), and PFM strength (r = 0.322) were significantly correlated and hip abductor strength entered in multiple regression. For partner-related domain in the PISQ, hip adductor (r = 0.386) and abductor strength (r = 0.314) were significantly correlated and hip adductor strength appeared in multiple regression. For the PISQ total score, hip extensor strength (r = 0.484), PFM endurance (r = 0.470), hip adductor strength (r = 0.424), hip abductor strength (r = 0.393), and PFM strength (r = 0.387) were significantly correlated and hip extensor strength and PFM endurance emerged in multiple regression.

CONCLUSION

The female sexual function could be related to not only PFM functions but also hip muscle strength in women with SUI. Hwang UJ, Lee MS, Jung SH, Ahn SH, Kwon OY. Relationship Between Sexual Function and Pelvic Floor and Hip Muscle Strength in Women With Stress Urinary Incontinence. Sex Med 2021;9:100325.