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目的 :为拇收肌腱弓处的尺神经卡压征机理和治疗提供解剖学基础。方法 :解剖 2 0个 ( 4 0侧 )成人尸体标本手的拇收肌腱弓 ,对拇收肌起始部的纤维弓状结构进行观察、测量 ,对观测结果进行统计学处理。结果 :40侧中 3 7.5 % ( 15侧 )存在纤维弓状结构 ;其中呈膜性的 (A型 )占 73 .3 % ( 11侧 ) ;呈索带状(B型 )占 2 6.6% ( 4侧 )。肌纤维弓状结构长平均 3 .7± 0 .6mm。结论 :部分人手存在拇收肌起始部的纤维腱弓 ,形成神经血管腔隙 ,腔隙内压增高可导致尺神经终末运动支嵌压征。治疗是在第 3掌骨基底部切开腱弓减压。
OBJECTIVE: To provide anatomical basis for the mechanism and treatment of rupture of ulnar nerve of adductor tendon. Methods: The arch of adductor tendon of 20 adult (40 sides) adult cadavers was dissected. The arches of the arch of adductor muscle were observed and measured, and the results were statistically analyzed. Results: There were fibroids in 37.5% (15 sides) of the 40 sides, 73.3% (11 sides) were membranous (type A) and 22.6% 4 side). Muscle fiber arch structure long average 3.7 ± 0.6mm. Conclusion: Some of the human hands have the tendon arch of the start of the adductor muscle to form the neurovascular lacuna. Increasing the internal pressure of the lacuna can lead to the embolization of the ulnar nerve. Treatment is in the third metacarpal base cut tendon arch decompression.