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Experimental studies on traumatic facial nerve injury

Published online by Cambridge University Press:  29 June 2007

Zhigang Cai ,
Guangyan Yu ,
Daquan Ma ,
Jing Tan ,
Zhaohui Yang  and
Xiaoming Zhang
Zhigang Cai*
Affiliation:
Department of Oral and Maxillofacial Surgery, Beijing Medical University, 100081 Beijing, People's Republic of China.
Guangyan Yu
Affiliation:
Department of Oral and Maxillofacial Surgery, Beijing Medical University, 100081 Beijing, People's Republic of China.
Daquan Ma
Affiliation:
Department of Oral and Maxillofacial Surgery, Beijing Medical University, 100081 Beijing, People's Republic of China.
Jing Tan
Affiliation:
Department of Oral Physiological Institute School of Stomatology, Beijing Medical University, 100081 Beijing, People's Republic of China.
Zhaohui Yang
Affiliation:
Department of Oral Physiological Institute School of Stomatology, Beijing Medical University, 100081 Beijing, People's Republic of China.
Xiaoming Zhang
Affiliation:
Department of Neuropathological Institute, 301 Hospital, 100853 Beijing, People's Republic of China.
*
Address for correspondence: Dr Cai Zhigang, Department of Oral and Maxillofacial Surgery, School of Stomatology, Beijing Medical University, Bai Shi Qiao Road 38#, Hai Dian District, 100081 Beijing, People's Republic of China. Fax: 00-86-10-62173402.
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Abstract

Purpose The purpose of this study was to investigate the outcome of different injuries to the facial nerve.

Materials and methods Six patterns of injuries (exposure, compression, crushing, stretching, division and post-division anastomosis) were produced in the buccal branches of the facial nerve in 60 rabbits. Electroneuronography (ENoG) and histology at definite time were used to evaluate the results.

Results and conclusions Exposure and compression injuries produced a neuropraxic injury and rapid recovery. Crushing and stretching injuries resulted in axonotmesis and whilst complete recovery can take place it may be very slow. Division and post-division anastomosis fall into neurotmesis injury and do not completely recover within six months; the former recovers slower and later than the latter.

Keywords

Facial nerveTraumatic injuryElectroneuronographyHistology
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 112 , Issue 3 , March 1998 , pp. 243 - 247
Copyright
Copyright © JLO (1984) Limited 1998

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