In the presence of malignancy, respiratory function may be compromised even when proximal limb 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。

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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。

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Limb salvage following resection of a tumor in the proximal part of the humerus poses many challenges.

肱骨近端肿瘤切除后保肢目前仍然存在很多挑战。

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