Reconstructing the proximal humerus after tumor removal is challenging due to muscle and bone loss. The current methods often result in poor shoulder function. This study assessed the long-term functional and oncological outcomes of using an inverse proximal humerus prosthesis in 46 patients with bone tumors. The results showed a mean range of motion of 62° in anteversion, 28° in retroversion, and 55° in abduction. Notably, 23 patients achieved over 90° of shoulder abduction, with an average of 140°. The median Musculoskeletal Tumor Society Score was 25. Complications included infection in two radiotherapy patients and single dislocations in seven patients. One patient with recurrent dislocations needed revision surgery. In conclusion, the use of the inverse proximal humerus prosthesis in bone tumor treatment yields excellent shoulder function and high patient satisfaction. This approach is especially beneficial for those with metastatic disease.
由于肌肉和骨骼缺损,肿瘤切除后的肱骨近端重建具有挑战性。现有方法常导致肩关节功能不良。本研究评估了46例骨肿瘤患者使用反向肱骨近端假体的长期功能与肿瘤学结果。结果显示患者前屈平均活动度为62°,后伸28°,外展55°。值得注意的是,23例患者肩关节外展角度超过90°,平均达140°。肌肉骨骼肿瘤协会评分中位数为25分。并发症包括两例放疗患者发生感染,七例患者出现单次脱位。一例复发性脱位患者需行翻修手术。结论表明,在骨肿瘤治疗中使用反向肱骨近端假体能获得优异的肩关节功能及较高的患者满意度,尤其对转移性肿瘤患者具有显著优势。
Endoprosthetic Reconstruction of the Proximal Humerus with an Inverse Tumor Prosthesis