Case report

Abstract

Rationale:Focal myositis (FM) is a very rare myopathy of unknown etiology characterized by focal enlargement within one single skeletal muscle. In particular, it occurs only involving the Sartorius muscle has never been reported.Patient concerns:A 25-year-old man was admitted to the hospital with progressive restricted left hip joint extension, left thigh discomfort and gait disturbance for 6 years.Diagnoses:Combining clinical manifestations with results of radiological and pathological examinations, it was consistent with the diagnosis of FMInterventions:The patient received a surgery under general anesthesia to release the contracted Sartorius tendon.Outcomes:The range of motion of the patient's left hip and ipsilateral knee has significantly improved as well as the discomfort of his left thigh relieved obviously after the surgery.Lessons:This case report is the first to report FM presenting as sartorius muscle contracture and the surgery is an alternative therapy for these patients.

The Effect of High-Intensity Laser Therapy on Trapezius Focal Myositis: A Rare Case Report

“…Focal myositis (FM) is a rare, benign myopathy characterized by a focal inflammatory pseudo-tumor of the skeletal muscle, which was initially reported in 1977 by Heffner et al 1 It is uncertain whether FM is a unique clinical entity or a rare form of polymyositis. 2 It presents itself as a painful swelling of a muscle that enlarges rapidly and simulates a soft tissue neoplasm. 3 The leg is the most common site of FM, but it has also been reported in the abdomen, forearm, neck, and tongue musculature.…”

“…7 In some cases of FM, evidence of denervation has been reported in electromyography (EMG). 2 We describe a case of FM in a rare place, namely the upper trapezius muscle, which was treated with a highpower laser with an excellent response.…”