Miyamoto H, Kurita K, Ogi N, Ishimaru J, Goss A N
Oral and Maxillofacial Surgery Unit, Dental School, The University of Adelaide, Australia.
Int J Oral Maxillofac Surg. 2000 Aug;29(4):290-5.
The aim of this study was to examine the effect of an intra-articular bone fragment on the genesis of temporomandibular joint (TMJ) ankylosis. Twenty-two adult sheep had a unilateral operation of removal of the temporal and condylar articular surfaces, plus discectomy with or without insertion of an intra-articular bone fragment. Functionally, radiologically, macroscopically and histologically, in the group with the intra-articular bone fragment, the joints showed more advanced ankylosis both at one and three months after the operation, as compared to the group with no intra-articular bone. This study shows that the bone fragment increases the extent of ankylosis in the sheep model. The clinical significance of the various experimental findings of this study and others in the same series is presented.
本研究的目的是探讨关节内骨碎片对颞下颌关节（TMJ）强直发生的影响。22只成年绵羊接受了单侧手术，切除颞骨和髁突关节面，并进行椎间盘切除术，术中有的插入关节内骨碎片，有的未插入。在功能、放射学、宏观和组织学方面，与未插入关节内骨碎片的组相比，在插入关节内骨碎片的组中，术后1个月和3个月时关节均显示出更严重的强直。本研究表明，在绵羊模型中骨碎片会增加强直的程度。本文还阐述了本研究及同一系列其他研究的各种实验结果的临床意义。
