骨间后神经穿桡管远端处的解剖特点及其临床意义

目的：了解骨间后神经穿旋后肌后可能的卡压位置及临床意义，方法：在2倍放大镜下解剖骨间后神经穿旋后肌后的行程，分支，可能卡压位置以及前臂活动对其影响。结果：骨间后神经穿旋后肌后恒定地分尺仙支和桡侧支；旋后肌远侧缘和拇短伸肌，拇长展肌浅面的腱性肌纤维结构可能是致卡压的解剖结构，前臂伸肌群的活动可 诱发上述结构卡压骨间后神经，结论：在桡管远端同样存在卡坟骨间后神经的解剖结构，必要时应手术探查，松解。

The anatomical characteristics of the distal site where the posterior interosseous nerve through the radial tunnel and its clinical significance

Objective:To study the possible compression site of the posterior interosseous nerve at the distal of the supinator muscle and its clinical significance.Methods:On 18 cadaveric specimens,the posterior interosseous nerves were dissected under headed diploid magnifying glass to observe their routes,branches,compression sites and the influences of forearm movement on them after the interosseous nerves went out of the supinator muscle.Results:All of the posterior interosseous nerves were divided into radial branches and ulnar branches,which can be compressed by the distal borders of the supinator muscles,the tendinous fibers on the superficial layer of the abductor pollicis longus and the extensor pollicis brevis and the forearm activity may cause compression of the posterior interosseous nerves.Conclusions:Some anatomic structures at distal radial tunnel may cause the compression of the posterior interosseous nerve,and sometimes the operative exploration and relaxation are necessary.