方法查阅国内外近年来关于手背皮神经营养血管皮瓣修复手外伤的文献，进行综合分析。
Methods Recent literature on repairing hand injury with dorsal neurocutaneous vascular flap was reviewed and analyzed.
研究选择：选择关于BRCA2蛋白及DNA损伤修复的文献。
STUDY SELECTION: The documents about BRCA2 protein and DNA repair were chosen.
文献评价：文献的来源主要是手指骨关节损伤修复重建方面的临床实验研究。
Literature EVALUATION: the resource of literatures was the clinic empirical studies of the repair and reconstruction of finger joint damage.
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