Nihon Seikeigeka Gakkai zasshi
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Nippon Seikeigeka Gakkai Zasshi · Aug 1984
[Clinical study of cross-reinnervation in obstetrical paralysis].
It is known that cross-reinnervation occurs when regenerating nerve fibers recombine in brachial plexus injury, especially in obstetrical paralysis. This cross-reinnervation causes abnormal contraction in many muscles simultaneously during voluntary movement. To date, however, little has been reported on its pathophysiology, severity and prognosis. ⋯ The site of cross-reinnervation depends on the severity of paralysis. Usually it spreads from the 5th and 6th cervical nerve roots to the upper trunk, medial trunk, posterior cord and lastly to the lower trunk and medial cord, determined by the severity of paralysis. This agrees with the way of spreading of obstetrical paralysis.