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Subthreshold continuous electrical stimulation facilitates functional recovery of facial nerve after crush injury in rabbit

 Jin Kim  ;  Su Jin Han  ;  Dong Hyun Shin  ;  Won-sang Lee  ;  Jae Young Choi 
 Muscle & Nerve, Vol.43(2) : 251-258, 2011 
Journal Title
 Muscle & Nerve 
Issue Date
We sought to determine whether electrical stimulation (ES) with subthreshold, continuous, low-frequency impulses is a viable clinical method for improving functional recovery after facial nerve crush injury. In 10 rabbits, bilateral crush injuries were made on the facial nerve by compression for 30 s with mosquito forceps, causing complete facial paralysis. Subthreshold continuous direct current ES with 20-Hz square-wave pulses was applied to the proximal stump on one side for 4 weeks. Vibrissae movement returned significantly earlier on the ES side, with a less variable recovery time. Electrophysiologically, the stimulated side had a significantly shorter latency, longer duration, and faster conduction velocity. Light and transmission electron microscopy revealed that the electrical stimulation also markedly decreased Wallerian degeneration. The average numbers of fluorescent, double-labeled nerve cells were significantly different between the ES and non-ES sides. This study shows that subthreshold, continuous, low-frequency ES immediately after a crush injury of the facial nerve results in earlier recovery of facial function and shorter overall recovery time
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1. College of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학교실) > 1. Journal Papers
Yonsei Authors
Lee, Won Sang(이원상)
Choi, Jae Young(최재영) ORCID logo https://orcid.org/0000-0001-9493-3458
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