Matsuura H, Miyamoto H, Ishimaru J, Kurita K, Goss A N
Oral and Maxillofacial Surgery Unit, Dental School, The University of Adelaide, Adelaide, South Australia.
Br J Oral Maxillofac Surg. 2001 Jun;39(3):196-203. doi: 10.1054/bjom.2001.0623.
The purpose of this study was to show the effect of partial immobilization of a costochondral graft reconstruction of an ankylosed temporomandibular joint (TMJ) in five adult sheep. Ankylosis was induced in all right TMJs. At three months, a graft was inserted and partially immobilized. Three months after the second operation, four sheep were killed by an overdose with pentothal. One sheep was killed at one month because of infection. Functionally, the body weight, which decreases with ankylosis, did not recover after insertion of the graft and the range of jaw movements got worse. Histologically, the grafts were well attached to the mandibular rami in three of four joints. In one joint, the graft showed signs of resorption and a foreign body reaction. We conclude that, if the reconstructed joint is partially immobilized, then there will be a degree of reankylosis. There was also a high failure rate.
本研究的目的是展示在五只成年绵羊中，部分固定肋软骨移植重建强直颞下颌关节（TMJ）的效果。所有右侧TMJ均诱发强直。三个月时，植入移植物并进行部分固定。第二次手术后三个月，四只绵羊因过量注射戊巴比妥钠死亡。一只绵羊因感染在一个月时死亡。在功能上，随强直而下降的体重在植入移植物后未恢复，下颌运动范围变差。组织学上，四个关节中有三个的移植物与下颌支附着良好。在一个关节中，移植物显示出吸收迹象和异物反应。我们得出结论，如果重建关节部分固定，那么将会有一定程度的再强直。失败率也很高。
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