Reconstruction of the proximal humerus in children who undergo bone tumor resection is challenging because of patients' small bone size and possible limb length discrepancy at the end of skeletal growth due to loss of the physis. There are several options for proximal humerus reconstruction in children, such as clavicula pro humero, free vascularized fibula grafting, massive bone osteoarticular allografting, endoprostheses, and allograft-prosthesis composites, but no consensus exists on the best method for reconstruction. Resurfaced allograft-prosthesis composites could be an alternative surgical option, but little is known about the results of this surgical technique.

中文翻译：

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用于骨肿瘤儿童近端肱骨重建的表面同种异体移植假体复合材料的无翻修生存率是多少？

接受骨肿瘤切除的儿童的肱骨近端重建具有挑战性，因为患者骨骼尺寸较小，并且在骨骼生长结束时由于骺板缺失可能导致肢体长度差异。儿童肱骨近端重建有多种选择，如肱骨近端锁骨、游离血管化腓骨移植、大块骨同种异体骨关节移植、内置假体和同种异体假体复合材料，但对于重建的最佳方法尚未达成共识。表面重修的同种异体移植假体复合材料可能是一种替代手术选择，但人们对这种手术技术的结果知之甚少。