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Revista de Cirurgia e Traumatologia Buco-maxilo-facial

versão On-line ISSN 1808-5210

Resumo

CARNEIRO JUNIOR, Bráulio et al. Assessment of the Marginal Mandibular Nerve Function after Risdon Approach. Rev. cir. traumatol. buco-maxilo-fac. [online]. 2011, vol.11, n.2, pp. 115-122. ISSN 1808-5210.

Detailed knowledge of the anatomy of the facial nerve and its branches, especially the marginal mandibular one is of fundamental importance in surgical treatment of mandibular fractures by making use of the Risdon surgical approach. The aim of this study is to evaluate the function of the marginal mandibular branch of facial nerve after surgical treatment these fractures by access Risdon. 44 patients with fractures of the mandibular body and angle, and the marginal mandibular nerve function being analyzed through visual inspection based on the rating scale in House-Brackmann facial nerve, in the preoperative and postoperatively (24 hours). Patients who had some degree of dysfunction within 24 hours were reassessed during 01 week, 01 month and 03 months postoperatively. Thirteen (29.55%) had some degree of dysfunction in a PO and thirty one (70.45%) patients had normal function, being females the most affected ones (71.43%). After 03 months, 91% of patients had grade I (normal) and 9% had grade II (mild dysfunction). It can be concluded that the majority of patients showed normal function of the marginal mandibular nerve at all times postoperatively demonstrating safety in the Risdon approaches performed.

Palavras-chave : Facial nerve; marginal mandibular branch; mandibular fractures; Nerve Injury; House-Brackmann grading..

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