Faria Gladstone, Medina Rebecca, Zattar Luciana, Viana Renata, Boggio Ricardo
From the Departament of Cosmiatry, Instituto Boggio - Medicina, ensino e pesquisa, São Paulo, São Paulo, Brazil.
Private Practice, São Paulo, São Paulo, Brazil.
Plast Reconstr Surg Glob Open. 2025 May 6;13(5):e6755. doi: 10.1097/GOX.0000000000006755. eCollection 2025 May.
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.
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.
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.
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.
男性臀部增大的美学需求正在增加；然而，大多数现有技术是针对女性解剖结构设计的，男性患者存在出现不理想的女性化特征的风险。这项初步研究提出了一种“沙漏技术”，使用透明质酸（HA）填充剂作为一种微创方法来增强男性臀部轮廓，同时保留男性特征。
共有10名年龄在20至45岁之间的男性患者接受了使用交联HA填充剂（UP Max，Ilikia，CGBio）进行的臀部增大手术。沙漏技术针对三个解剖区域——上极、突出部和下极——同时避开转子凹陷（“无接触区域”）以保持自然轮廓。在浅皮下平面使用18G套管进行注射。在术后30天内通过临床评估和摄影记录对安全性、耐受性和美学效果进行评估。
所有患者的臀部轮廓和突出度均得到增强，同时保留了男性特征，未出现女性化现象。除了轻微的局部疼痛和瘀伤外，未报告不良事件。在30天的随访中，结果稳定且美学效果令人满意。
使用HA填充剂的沙漏技术是一种安全、有效且可重复的微妙男性臀部增强方法。它保留了男性解剖结构，为手术提供了一种微创替代方案，值得在更长随访期和更大样本量的研究中进一步研究。
