著者

北村 歳男 高木 克公 山鹿 眞紀夫 森澤 佳三 井手 淳二 荒木 崇一 田上 学

出版者

日本肩関節学会

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.18, no.1, pp.1-4, 1994-09-01 (Released:2012-11-20)

参考文献数

8

被引用文献数

1

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The purpose of this research was to clarify the causes of numbness and pain by traction of the upper limbs. We stretched the nerves in the upper limbs of rats by utilizing the flail of the shoulder girdle, and measured the blood flow of the brachial plexus and the median nerve. The model animals,32 wistar rats, were inserted with steel lines to the radius and ulna. These steel lines were drawn in the direction of a shoulder abduction of 80 degrees. A decrease and recovery of the blood flow were measured using the hydrogen gas clearance method.The blood flow of the subepineural space in the brachial plexus decreases sharply in conditions with looseness of the plexus.The blood flow of the intrafuniculuse in the brachial plexus decreases like a straight line in those states without looseness of the plexus. The blood flow of the subepineural space in the median nerve decrease like a straight line, too. The decrease rate of the subepineural space was sharper than that of the intrafuniculuse. As for the recovery rate, there was no significant difference in either site.One of the factor that causes nervous and functional imbalance with a slight traction is a sharp reduction of the blood flow in the subepineural space of the brachial plexus.

著者

井手 淳二 山鹿 眞紀夫 北村 歳男 田上 学 前田 智 高木 克公 森澤 佳三

出版者

日本肩関節学会

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.21, no.2, pp.311-314, 1997-06-25 (Released:2012-11-20)

参考文献数

7

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(Purpose)We Studied the diagnosis and surgical management of suprascapular nerve entrapment neuropathy in athletes.(Materials and methods)Eighteen patients with infraspinatus muscle atrophy were studied. Fourteen were men and 4 women. Their mean age was 27 (range 14 to 40) years. The diagnosis was confirmed by physical and electromyographic examinations. As an ancillary test, MRIs of the shoulder joint were obtained. Those patients with rotator cuff tear were excluded from this study.(Results)Electromyographic examinations showed an abnormality in 8 patients. Two of them had isolated paralysis of the infraspinatus muscle. We operated on 4 patients with suprascapular nerve entrapment. We performed a release of the superior scapular transverse ligament on 2 patients with paralysis of the supraspinatus and infraspinatus muscles, a shaving of the spinoglenoid notch on a patient with isolated paralysis of the infraspinatus muscle and removed the ganglion cyst in 1. All the patients had good results, however, they needed 1 or 2 years to recover from paralysis.(Conclusion)Early diagnosis and treatment are important for the management of suprascapular nerve entrapment neuropathy in athletes.