Griswold B Gage, DeFoor Mikalyn T, Steflik Michael J, Parada Stephen A
Augusta University, GA, USA.
San Antonio Military Medical Center, TX, USA.
Hand (N Y). 2025 May;20(3):NP7-NP12. doi: 10.1177/15589447241267784. Epub 2024 Aug 14.
Glenoid bone loss from an infiltrating intramuscular lipoma causing erosive changes is a rare occurrence. A 71-year-old woman with symptomatic rotator cuff arthropathy in the setting of an intramuscular infiltrating lipoma and secondary glenoid bone loss was treated with single-stage tumor excision and reverse total shoulder arthroplasty (rTSA) using an injectable, hard self-setting calcium phosphate as structural bone graft substitute. The patient demonstrated excellent clinical and radiographic outcomes at 2-year follow-up. Infiltrating lipomas resulting in functional rotator cuff arthropathy and erosive osseous glenoid changes are exceedingly rare, yet significant glenoid bony defects present a challenge in the setting of shoulder arthroplasty. This report describes the use of structural bone graft substitute for the management of a glenoid bone defect from a rare case of an intramuscular infiltrating lipoma, while maintaining excellent improvement in functional outcomes and pain after rTSA.
因浸润性肌内脂肪瘤导致侵蚀性改变而引起的肩胛盂骨质流失是一种罕见的情况。一名71岁女性，患有症状性肩袖关节病，同时伴有肌内浸润性脂肪瘤和继发性肩胛盂骨质流失，接受了单阶段肿瘤切除和使用可注射、硬固型自固化磷酸钙作为结构性骨移植替代物的反向全肩关节置换术（rTSA）。在2年随访时，患者显示出优异的临床和影像学结果。导致功能性肩袖关节病和侵蚀性肩胛盂改变的浸润性脂肪瘤极为罕见，但严重的肩胛盂骨缺损在肩关节置换术中是一项挑战。本报告描述了在罕见的肌内浸润性脂肪瘤病例中，使用结构性骨移植替代物来处理肩胛盂骨缺损，同时在rTSA后保持功能结果和疼痛的显著改善。
