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[Functional changes of forelegs of rats after C6 and C8 nerve roots resection: experimental study]
1Department of Handsurgery, Third Teaching Hospital, Norman Bethune University of Medical Science, Changchun 130021.
Objective:
To find new nerve roots as dynamic source, we observed the effect of C(6) and C(8) resection on the function of forelegs of roots.
Method:
Considering the relationship between C(6) and biceps brachii muscle, C(8) and flexor digitorum profundus muscle, we resected C(6) and C(8) nerve roots of right side as the experimental side and compared with the left side. The position, pace, appearance of ulcer were observed on the foot and the phenomena of self-injury were seen regularly. The EMG and tensile strength of biceps brachii and flexor digitorum profundus muscles were measured immediately at two weeks and four weeks after operation.
Result:
The position of two sides of the rats was symmetrical. There were no limp, ulceration and phenomena of self-injury. Normal wave figure in EMG was noted in the experimental side. There was no significant difference in t test in EMG wave amplitude, maximum tetanized systole tensile strength and duration of isometric contraction.
Conclusion:
C(6) and C(8) nerve roots resection has no obvious influence on function of the leg.