Côelho T D
Faculty of Medicine, Federal University of Paraiba, Brasil.
Arq Neuropsiquiatr. 1994 Dec;52(4):539-44. doi: 10.1590/s0004-282x1994000400014.
The suprascapular nerve originates from the upper trunk of the brachial plexus or less frequently from the root of C5. It runs a short way and crosses the suprascapular notch. It innervates the supraspinatus muscle and the acromioclavicular and glenohumeral joints. Then, it crosses the lateral edge of the spine of the scapula passing through the spinoglenoid notch, and innervates the infraspinatus muscle. These are potential sites of injury to the suprascapular nerve. Three cases of suprascapular nerve entrapment causing an isolated infraspinatus muscle atrophy in volleyball players were studied. It is suggested the hypothesis that the nature of the smash, in which the athlete uses the arm violently, more than does in volleyball service or in the art of reception, is the key to the pathogenesis of the lesion in volleyball players.
肩胛上神经起源于臂丛上干，较少情况下起源于C5神经根。它走行较短，穿过肩胛上切迹。它支配冈上肌以及肩锁关节和盂肱关节。然后，它穿过肩胛冈外侧缘，经肩胛下孔，支配冈下肌。这些都是肩胛上神经可能受损的部位。研究了3例排球运动员因肩胛上神经卡压导致孤立性冈下肌萎缩的病例。提出了一种假说，即运动员在扣杀时比在发球或接球技术中更用力地使用手臂，这种扣杀的性质是排球运动员损伤发病机制的关键。
