The structure across AINs include collateral ulnar vessel(8.3%),little muscular or fibrous bundles from flexor digitorum superficialis(FDS) to FPL(10.4%).

• 横过骨间前神经的结构还有 :尺侧副血管 (48.；3%25 )；指浅屈肌发出至拇长屈肌的小肌束或纤维束 (10