ArticleMaxillofacial plastic and reconstructive surgery2025
Total joint replacement with the stock Biomet system in adult hemifacial microsomia without glenoid fossa: a case report and literature review.
Article in Maxillofacial plastic and reconstructive surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundIn patients with hemifacial microsomia accompanied by mandibular fossa deficiency and severe atrophy of the mandibular ramus, customized total joint replacement (TJR) is commonly used to restore masticatory and joint function and improve facial asymmetry. However, in countries where customized TJR is not approved, or for patients for whom the cost is prohibitive, a stock TJR system must be considered. In cases with a severely medially inclined frontal ramal angle and a lack of supporting bone for the fossa component, using a stock TJR poses significant technical challenges. CASE PRESENTATION: This case report describes the use of autogenous bone grafting to overcome these limitations. An 18-year-old male with HFM type IIB on the left side received staged procedures, including bone grafting between mandibular proximal and distal segments to increase the frontal ramal angle, autogenous reconstruction of the mandibular fossa to enable fixation of the TJR fossa component, and orthognathic surgery.
conclusionsThe frontal ramal angle improved by approximately 6.5 degrees, and 12.42 mm advancement of the pogonion could be achieved in lateral cephalogram. Successful functional and esthetic outcomes were achieved, with stable maintenance of a stock Biomet TJR over a seven-year period.
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