桡神经深支与旋后肌的关系

RELATIONSHIP BETWEEN THE DEEP BRANCH OF THE RADIAL NERVE AND THE SUPINATOR

观察了60侧成人尸体的旋后肌区。发现:①桡神经深支与旋后肌的位置关系:Ⅰ型占21.7％,Ⅱ型占78.3％。②旋后肌管长37.78±7.16mm,上口和下口至旋后肌浅层桡骨附着缘距离分别为9.91±2.19mm和13.24±3.69mm。据此设计了显露桡骨上1/3段的切口。③桡神经深支进入旋后肌管内发出另外的施后肌支者占41.7％(25侧),结果表明此施后肌支是不恒定的。④施后肌管下口腱性结构的出现率26.7％,认为是桡神经深支受压综合征的解剖学因素之一。

The supinator areas were observed in 60 sides of adult cadavers It is found: 1 . The position relationship of the deep branch of the radial nerve to the supinator was as follows, type I, 21.7% and type II, 78.3%. 2. The length of the supinator canal was 37.78±7.16 m m, the distances from the upper and lower opening to the insertion border on the radius of the superficial layer of the supinator were 9.91±2.19mm and 13.24±3.69mm, respectively, According to these the incision to expose the upper third segment was designed. 3. The cases, of which the additional branch to the supinator derived from the deep branch of the radial nerve when it enter into the supinator canal, were 41.7% ( 25 sides). It showed this branch to the supinator was not constant. 4. The occurrance rate of the tendinous structure at the lower opening of the supinalor canal was 26.7%. It is one of the anatomical factors to cause the compression syndrome of the deep branch of the radial nerve.