Intraoperative Localization Of The Marginal Mandibular Nerve In The Pakistani Population: A Cross-Sectional Study

Abstract

Objective: This study aims to evaluate the proximity of the marginal mandibular nerve to the lower border of the mandible in the Pakistani population, in comparison with previous studies to reduce the risk of inadvertent nerve damage during surgical interventions.

Methods: A total of 60 patients in the age range between the second & sixth decade requiring incision in the submandibular region were selected. Intraoperative identification of the nerve followed by measurement of its lowest point from the inferior border of the mandible was done. A total of 45 distinct nerves were recognized. Measurements on both the left and right sides were taken and compared with each other. The association of nerve position with the age of the patients was distinguished.

Results: A total of 45 nerves were identified. The average position of the Marginal Mandibular Nerve was determined to be 11.75 mm below the inferior border of the mandible. There was no significant difference between the left and right sides and about age.

Conclusion: The inferior border of the mandible is where the Marginal Mandibular Nerve is situated, consistent with prior research. There is no significant variation between the left and right sides. The position of the nerve is not affected by age as there is no association detected between the position of the nerve and age. The placement of an incision by previous recommendations of one finger breadth below the inferior border of the mandible can be used in the Pakistani population to avoid iatrogenic damage to the marginal mandibular nerve, leading to lesser complications and distress to the patient.

Keywords:  Marginal mandibular branch, facial nerve, mandible, Injury.