LUMBRICAL MUSCLE INCURSION INTO THE CARPAL-TUNNEL DURING FINGER FLEXION

被引：48

作者：

COBB, TK ^{[1
]}

AN, KN ^{[1
]}

COONEY, WP ^{[1
]}

BERGER, RA ^{[1
]}

机构：

[1] MAYO CLIN & MAYO FDN,DEPT ORTHOPED,ROCHESTER,MN 55905

来源：

JOURNAL OF HAND SURGERY-BRITISH AND EUROPEAN VOLUME | 1994年 / 19B卷 / 04期

关键词：

D O I：

10.1016/0266-7681(94)90206-2

中图分类号：

R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];

学科分类号：

摘要：

Carpal tunnel syndrome is one of the many so-called cumulative trauma disorders thought by some to be related to the performance of repetitive tasks in the work-place. The cause of this disorder is unknown. We have observed lumbrical muscle incursion into the carpal tunnel during finger flexion. This study was conducted to determine the amount of this incursion in normal wrists. Five cadaver upper limbs were analyzed radiographically with radiopaque markers on the flexor retinaculum and the lumbrical muscle origins in four finger positions: full extension, 50% flexion, 75% flexion, and 100% finger flexion. The lumbrical muscle origins were an average of 7.8 mm distal to the carpal tunnel in full finger extension. They moved an average of 14 mm into the carpal tunnel with 50% finger flexion, 25.5 mm with 75% flexion, and 30 mm with 100% flexion. Abnormal lumbrical muscles have been cited as a possible cause of carpal tunnel syndrome. These findings suggest that lumbrical muscle incursion during finger flexion is a normal occurrence and is a possible cause of work-related carpal tunnel syndrome.

引用

页码：434 / 438

页数：5

共 16 条

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