骨间前神经综合征解剖学基础

目的 :探讨骨间前神经综合征发病解剖基础。方法 :48侧 (左右各 2 4侧 )成人防腐固定标本在肉眼或双目放大镜下解剖观察可能构成对骨间前神经卡压的解剖结构。结果 :有 6 6 .6 %的拇长屈肌副头由内上至外下斜过骨间前神经主干前方。横过骨间前神经的结构还有 :尺侧副血管 (48.3% ) ,指浅屈肌发出至拇长屈肌的小肌束或纤维束 (10 .4% )。骨间前神经与桡、尺骨的关系 :77%骨间前神经走在桡骨颈前方下行一段 ,长为 3.9cm(37侧 ,) ;16 .7%骨间前神经在桡、尺骨之间走行 ;6 .3%隔指深屈肌走在尺骨的前方。结论 :拇长屈肌副头、横过骨间前神经的肌束和纤维等结构可能是致骨间前神经综合征的解剖基础。

Anatomical basis of anterior interosseous nerve syndrome

Objective:To study the anatomical basis of anterior interosseous nerve(AIN) syndrome.Methods:The anatomical structure having the possibility of compressing the AIN were observed on 48 upper limb specimens.Results:66.7% accessory heads of flexor pollicis longus(FPL) anteriory pass the main branch of AIN from the mediosuperior to the lateroinferior obliquely.The structure across AINs include collateral ulnar vessel(8.3%),little muscular or fibrous bundles from flexor digitorum superficialis(FDS) to FPL(10.4%).Relationship of AINs and the radius and ulna:with a length of 3.9 cm,77% of AINs pass the radial neck anteriorly;16.7% of AINs pass between the radius and ulna;6.3% of AINs pass anterior to the ulna.Conclusion:Accessory head of FPL,the muscular of fibrous bundles across AIN may be the anatomical basis of AIN syndrome.