PMID: 7024443Apr 1, 1981Paper

An experimental study on the functional recovery of denervated muscles--effects of stump rotation in nerve suture (author's transl)

Nihon Seikeigeka Gakkai zasshi
A Nagano

Abstract

There are many factors which affect the end result of nerve suture. Clinically it is said tht rotation of the stumps at suture site has an unfavorable effect upon functional recovery, owing to discrepancies of funicular patterns and inappropriate funicular approximation. In order to evaluate the effect of rotation of the stumps at suture sites, tibial nerves of thirty-three full grown rabbits were used. After the tibial nerve was cut at a point three cm proximal to the popliteal fossa, in one group (20 rabbits) the nerve was sutured without rotation (0 degrees group) and in another group (19 rabbits) with 180 degrees rotation of the proximal stump (180 degrees groups), using epineural technique under operating microscope. Six months later return of nerve function was evaluated electrophysiologically and histologically. Electrophysiological measurements included electromyography, motor conduction velocity and muscle strength stimulating proximal stump. Histological evaluation following weighing included H-E stain, DPN diaphorase stain for muscle and Cajal stain for axon. There were no significant differences between the two groups with regard to the passage rate of axons at the suture site, motor conduction velocity or recovery ...Continue Reading

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