Repair of multiple cervical root avulsion with sural nerve graft.
To obtain easier access to avulsed roots in the intradural space for patients suffering cervical root avulsion, the authors of this study developed a novel repair method. This involves using nerve grafts to bridge corresponding segments of the spinal cord and the trunk or cord level of the plexus, respectively, in two surgical stages. All eight patients admitted to this study received pre- and post-operative workups of electrophysiological evaluations and muscle power grading through Medical Research Council (MRC) scores. The degrees of impairment were also graded according to a modified version of Dumitru's and Wilbourn's scale (mild = 1; moderate = 2; severe = 3). The preoperative versus post-operative differences in the severity of the injuries and in the grading of the target muscle power were calculated according to the Wilcoxon signed-rank test. The preoperative degree of the severity of the injuries, as measured by electromyography (EMG), was 3.00 +/- 0.00 (mean +/- S.D.). The post-operative result was 2.125 +/- 0.641. Significant change took place after repair (P = 0.0313). Moreover, although little improvement was observed in the triceps, brachioradialis (BR), extensor carpi radialis (ECR), flexor digitorum profundus (FDP) and intrinsic hand muscles, the MRC grading showed significant yet not prominent motor recovery in the deltoid and biceps brachii (both P = 0.0313). We were impressed that the initial significant statistical results of differences in pre- and post-operative severity of the injuries and muscle power grading, demonstrated that regeneration does occur with this repair strategy.
Hsu
Sanford P C
SP
Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, National Yang-Ming University, Taipei, Taiwan, ROC.
Shih
Yang-Hsin
YH
Huang
Ming-Chao
MC
Chuang
Tien-Yow
TY
Huang
Wen-Cheng
WC
Wu
Hsiu-Mei
HM
Lin
Pei-Hsin
PH
Lee
Liang-Shong
LS
Cheng
Henrich
H
D000063:Accidents, Traffic; D000293:Adolescent; D000328:Adult; D001720:Birth Injuries / Q000534:rehabilitation / Q000601:surgery*; D020516:Brachial Plexus Neuropathies / Q000534:rehabilitation / Q000601:surgery*; D004185:Disability Evaluation; D004576:Electromyography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011128:Polyradiculopathy / Q000534:rehabilitation / Q000601:surgery*; D012086:Reoperation; D013497:Sural Nerve / Q000637:transplantation*