Abstract
We report on a case of TMJ reankylosis (heterotopic bone) following total TMJ alloplastic reconstruction in a 40-year-old Black male. The heterotopic bone was excised following removal of the fossa component. The fossa component was re-inserted, and the periarticular tissue was grafted with fat procured from the abdomen. Patient was placed on an aggressive physiotherapy programme which was monitored for a period of 6 months. He returned for review one year later with a mouth opening of 27 mm. We present also a short review of the literature on heterotopic bone formation. This case is of particular interest in that despite the heterotopic bone around it; the prosthesis was preserved after the bone was removed.
Highlights
Temporomandibular joint (TMJ) ankylosis is defined as the inappropriate fusion of the mandibular condyle to the mandibular fossa and its surrounding bone
We report on a case of TMJ reankylosis following total TMJ alloplastic reconstruction in a 40-year-old Black male
The exact pathogenesis of TMJ ankylosis in traumatic injuries is unclear; it has been suggested that joint hypomobility, young patient age as well as the morphology of the condylar fracture may increase the risk of an
Summary
Temporomandibular joint (TMJ) ankylosis is defined as the inappropriate fusion of the mandibular condyle to the mandibular fossa and its surrounding bone This fusion may be bony, fibrous or fibro-osseous in nature [1]. Alloplastic TMJ prosthesis provide significant benefits such as lack of donor site morbidity, dimensional stability compared to autogenous costochondral grafts and the ability to provide earlier return to function as well as earlier initiation of post-operative physiotherapy [6]. They reduce the risk of occlusal disturbances associated with gap and interpositional arthroplasties [4]. We report on the management of a case which developed heterotopic bone formation around TMJ prosthesis as well as a discussion of the available literature relating to this complication
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