Spinal locomotion: a comparison of the kinematics and the electromyographic activity in the same animal before and after spinalization.

To assess the recuperation of locomotor functions of the hindlimbs after spinal section at T13, EMGs and kinematics were analyzed in a chronically implanted adult cat before and up to 14 days after spinalization. At this time, the cat was capable of coordinated walking, plantar foot contact and weight support of the hindquarters for several step cycles. There was however a foot drag early in swing and the steps tended to be shorter. Most muscles showed similar timing characteristics although there were some changes in amplitude. It is concluded that the spinal cord can generate a detailed locomotor pattern in the hindlimbs even in the adult animal.