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自从１９４９年解剖学家Ｚａｇｎｏｎｉ首先报告腰骶神经根畸形（ｌｕｍｂｏｓａｃｒａｌｎｅｒｖｅｒｏｏｔａｎｏｍａｌｉｅｓ，ＬＮＲＡ）以来，ＬＮＲＡ引起骨科医师的注意。初期研究报告多是一些基于手术发现的散在报告〔１～３〕。Ｃａｎｎｏｎ等〔２〕１９６２年对该?
LNRA has drawn the attention of orthopedic surgeons since anatomist Zagnoni first reported the lumbosacral nerve root anomalies (LNRA) in 1949. The initial report is mostly based on a number of scattered reports of surgical findings 〔1 ~ 3〕. Cannon et al 〔2〕 1962 on the?