Following avulsion of a spinal ventral root, motoneurons that project through the avulsed root are axotomized. Avulsion between, for example, L2 and L6 leads to denervation of hind limb muscles. Reimplantation of an avulsed root directed to the motoneuron pool resulted in re-ingrowth of some motor axons. However, most motoneurons display retrograde atrophy… (More)
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