J Korean Assoc Oral Maxillofac Surg.  2017 Feb;43(1):46-48. 10.5125/jkaoms.2017.43.1.46.

The postoperative trismus, nerve injury and secondary angle formation after partial masseter muscle resection combined with mandibular angle reduction: a case report

• Kim JH
• Lim SU
• Jin KS
• Lee H
• Han YS

• KMID: 2385070
• DOI: http://doi.org/10.5125/jkaoms.2017.43.1.46

Abstract

A patient, who underwent partial masseter muscle resection and mandibular angle reduction at a plastic surgery clinic, visited this hospital with major complaints of trismus and dysesthesia. A secondary angle formation due to a wrong surgical method was observed via clinical and radiological examinations, and the patient complained of trismus due to the postoperative scars and muscular atrophy caused by the masseter muscle resection. The need for a masseter muscle resection in square jaw patients must be approached with caution. In addition, surgical techniques must be carefully selected in order to prevent complications, and obtain effective and satisfactory surgery results.

Keyword

Masseter muscle resection; Mandibular angle reduction; Trismus; Nerve damage; Secondary angle

MeSH Terms

Cicatrix
Humans
Jaw
Masseter Muscle*
Methods
Muscular Atrophy
Paresthesia
Surgery, Plastic
Trismus*

Figure

• 

  Fig. 1 Patient's clinical facial images. A. Rest position. B. The length of maximum mouth opening was 11 mm.

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  Fig. 2 Radiographic images of the patient. A. Panoramic view (bilateral mandibular angle resection; the resected mandibular inferior margin is very close to the inferior margin of the inferior alveolar nerve canal; the formation of secondary angle at the resected anterior and posterior border is seen). B. Temporomandibular joint panoramic view showed only rotational movement of the mandibular condyle without translation during mouth opening.

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