EFFECT OF LUMBRICAL MUSCLE INCURSION WITHIN THE CARNAL TUNNEL ON CARNAL TUNNEL PRESSURE - A CADAVERIC STUDY

被引：52

作者：

COBB, TK ^{[1
]}

AN, KN ^{[1
]}

COONEY, WP ^{[1
]}

机构：

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

来源：

JOURNAL OF HAND SURGERY-AMERICAN VOLUME | 1995年 / 20A卷 / 02期

关键词：

D O I：

10.1016/S0363-5023(05)80005-X

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：

Lumbrical muscle incursion within the carpal tunnel has been implicated as a possible cause of carpal tunnel syndrome. During finger flexion, surgeons have observed the presence of lumbrical muscles in the carpal tunnel. However, the significance of this incursion has not been evaluated. To evaluate the effect of lumbrical muscle incursion within the carpal tunnel as a cause of carpal tunnel syndrome, carpal canal pressures were measured in cadaver hands at the level of the hamate hook for four finger positions: (1) 100% finger flexion; (2) 75% finger flexion; (3) 50% finger flexion; and (4) full extension. After measuring carpal tunnel pressures for each position, the lumbrical muscles were excised and the pressures were again recorded. A progressive increase in carpal tunnel pressure was noted for each degree of finger flexion in the group with intact lumbricals. This is in sharp contrast to a relatively stable carpal tunnel pressure during finger flexion for the group without lumbrical muscles. Two-way repeated measures analysis of variance revealed a significant difference in carpal tunnel pressure for both variables, lumbrical muscles and finger position. One-way repeated measures analysis of variance for carpal tunnel pressures demonstrated that the effect of finger position was significant for the group with intact lumbricals but not For the group with lumbricals removed. We conclude that lumbrical muscle incursion into the carpal tunnel can result in elevation of carpal tunnel pressure in cadaver hands and could be a variable in the cause of work-related carpal tunnel syndrome.

引用

页码：186 / 192

页数：7

共 25 条

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