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  • Title: [Management of traumatic temporomandibular joint ankylosis: a perspective].
    Author: Zhang Y, He Y.
    Journal: Zhonghua Kou Qiang Yi Xue Za Zhi; 2023 Oct 09; 58(10):985-990. PubMed ID: 37818532.
    Abstract:
    Traumatic injury to the temporomandibular joint (TMJ) was the most common cause of TMJ ankylosis (85%), while sagittal fracture of the mandibular condyle was identified as the high risk fracture pattern. TMJ disc displacement is one of the prerequisite factors of TMJ ankylosis. The severe damage and close contacts of both the articular surface of glenoid fossa and condyle were also crucial pathogenic factors in the development of TMJ ankylosis. The mechanism and development of TMJ ankylosis may be similar to hypertrophic non-union, and the persistence of radiolucent zone within the ankylotic callus governs the clinical and pathological process of TMJ ankylosis. In type Ⅰ traumatic TMJ ankylosis, repositioning of the displaced disk is required, while the preservation of pseudo-joint is essential in the management of the type Ⅱ traumatic TMJ ankylosis. Nevertheless, the rate of TMJ reankylosis still remains high. Higher rate of TMJ reankylosis was observed in paediatric population, bilateral involvement of TMJ ankylosis, and in cases with reconstruction of mandibular condyle with coronoid process. 关节创伤约占颞下颌关节强直病因的85%以上，髁突矢状骨折是最易导致关节强直的“危险类型”骨折。关节盘移位是关节强直形成的必要条件，但不是唯一条件，上下关节面重度损伤及彼此间紧密接触也是关节强直发生的重要条件。关节强直的发生及形成机制类似于肥大性骨不连，强直骨球内透射带的持续存在主导了强直进程。Ⅰ型强直要求复位关节盘、Ⅱ型强直要求保留假关节，是创伤性关节强直的治疗特点。目前关节强直术后的复发率依然没有得到有效控制，儿童、双侧强直和喙突移植重建髁突患者的术后复发率较高。.
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