Geist J R, Bhatti P, Plezia R A, Wesley R K
Department of Diagnostic and Surgical Sciences, University of Detroit Mercy School of Dentistry, Michigan 48219, USA.
Dentomaxillofac Radiol. 1998 May;27(3):182-5. doi: 10.1038/sj/dmfr/4600341.
Fibrodysplasia ossificans circumscripta (FOC) is a lesion characterized by localized calcification of the investing fascia of skeletal muscle. It is often related to repeated trauma and was formerly known as traumatic myositis ossificans. Surgical procedures involving muscles are also believed to be a factor in the origin of the lesion. When FOC develops in the muscles of mastication it can lead to severe trismus. A case is reported of FOC in the left masseter muscle of a 44-year-old man who presented with marked limitation of opening. It was believed that previous fractures of the left maxilla and mandible and/or the subsequent surgical treatments were responsible for the onset of FOC. The radiographic and microscopic features of FOC are discussed in relation to recent theories on the etiology, pathogenesis, and treatment of the lesion.
局限性骨化性肌炎（FOC）是一种以骨骼肌被膜局限性钙化为特征的病变。它常与反复创伤有关，以前被称为创伤性骨化性肌炎。涉及肌肉的外科手术也被认为是该病变起源的一个因素。当FOC发生在咀嚼肌时，可导致严重的牙关紧闭。本文报道了一例44岁男性左侧咬肌发生FOC的病例，该患者表现为明显的开口受限。据信，既往左侧上颌骨和下颌骨骨折及/或随后的外科治疗是FOC发病的原因。结合有关该病变病因、发病机制和治疗的最新理论，讨论了FOC的影像学和显微镜特征。
