In the presence of malignancy, respiratory function may be compromised even when proximallimb muscles remain strong.
在存在恶性肿瘤的情况下，呼吸功能损害可能发生在肢体近端肌无力出现之前。
2
Endoprosthetic replacement of the proximal humerus provides a good function of the upper limb, a low risk of local relapse with a low complication rate at follow-up.
在随访期内，肱骨近端内固定假体置换能够提供良好的上肢功能，肿瘤局部复发率低，而且并发症发生率低。
3
Limb salvage following resection of a tumor in the proximal part of the humerus poses many challenges.