Choi Jeong Seok, Ahn SungJin, Choi Wonseok, Kang Seonghyun, Ryu Yun Ki, Kent William T, Oh Jong-Keon, Cho Jae-Woo
Department of Orthopaedic Surgery, Korea University Guro Hospital, Seoul, Republic of Korea.
Department of Orthopaedic Surgery, Armed Forces Capital Hospital, Seongnam, Republic of Korea.
Medicine (Baltimore). 2025 Sep 12;104(37):e44490. doi: 10.1097/MD.0000000000044490.
Gluteus medius (GMED) muscle atrophy after femoral neck fracture surgery is common and can contribute to gait abnormalities. This retrospective study aimed to evaluate the changes in muscle volume and intramuscular adipose tissue following osteosynthesis. This retrospective study included 33 patients who underwent osteosynthesis for femoral neck fracture between April 2010 and April 2022. Bilateral hip computed tomography scans were analyzed at 5 time points: preoperative, immediate postoperative, early postoperative, intermediate postoperative, and late postoperative. Three-dimensional volumetric and muscle-to-adipose tissue ratio analyses were performed. The GMED muscle volume on the fractured side decreased by up to 20% and remained reduced by 10% even 1 year after surgery, with a 1.6 times higher muscle-to-adipose tissue ratio than that on the uninjured side. These findings suggest that GMED atrophy and compositional changes persist for more than a year, even in young healthy patients, potentially affecting their long-term gait and hip function.
股骨颈骨折手术后臀中肌（GMED）萎缩很常见，且会导致步态异常。这项回顾性研究旨在评估骨合成术后肌肉体积和肌内脂肪组织的变化。该回顾性研究纳入了2010年4月至2022年4月期间接受股骨颈骨折骨合成手术的33例患者。在术前、术后即刻、术后早期、术后中期和术后晚期这5个时间点对双侧髋部进行计算机断层扫描分析。进行了三维体积分析和肌肉与脂肪组织比率分析。骨折侧的GMED肌肉体积减少了20%，甚至在术后1年仍减少了10%，其肌肉与脂肪组织的比率比未受伤侧高1.6倍。这些发现表明，即使是年轻健康的患者，GMED萎缩和成分变化也会持续一年以上，可能会影响他们的长期步态和髋关节功能。
