A Cruz-Martínez1, J Arpa. 1. Unidad de Electromiografía, Hospital La Luz, Madrid, Spain. jarpag@ctv.es
Abstract
OBJECTIVE: Clinical and electrophysiological evolution after total section of the forearm and nerves resuture. MATERIAL AND METHODS: A young boy aged 14 years with accidental amputation of the right forearm. The forearm was replanted within the first 6 hours after accident. Electromyography, nerve conduction, estimated number of the motor units, single fiber EMG and motor complex reflex responses were studied until 4 years after surgery. RESULTS: Functional recovery was reached in muscles innervated by median and ulnar nerves. After 4 years of evolution EMG showed signs of chronic neuropathy. Nerve conduction did not reach normal values. Single fiber EMG showed increased fiber density and jitter, and intermittent impulse blocking The estimated number of the motor units was severely reduced with high mean amplitude. Motor reflex responses were elicited by cutaneous stimulation consistent with axon reflexes or ephatic responses. CONCLUSIONS: Replanted limbs in selected cases and nerve's resuture may reach a functional recovery for daily activities.
OBJECTIVE: Clinical and electrophysiological evolution after total section of the forearm and nerves resuture. MATERIAL AND METHODS: A young boy aged 14 years with accidental amputation of the right forearm. The forearm was replanted within the first 6 hours after accident. Electromyography, nerve conduction, estimated number of the motor units, single fiber EMG and motor complex reflex responses were studied until 4 years after surgery. RESULTS: Functional recovery was reached in muscles innervated by median and ulnar nerves. After 4 years of evolution EMG showed signs of chronic neuropathy. Nerve conduction did not reach normal values. Single fiber EMG showed increased fiber density and jitter, and intermittent impulse blocking The estimated number of the motor units was severely reduced with high mean amplitude. Motor reflex responses were elicited by cutaneous stimulation consistent with axon reflexes or ephatic responses. CONCLUSIONS: Replanted limbs in selected cases and nerve's resuture may reach a functional recovery for daily activities.