Effect of limited jaw motion on ankylosis of the temporomandibular joint in sheep

Pathological changes after the surgical creation of a vertical intracapsular condylar fracture

“…Fibrous adhesions developed across the joint space. This was consistent with histologic changes seen in a series of ankylosis experiments [15][16][17][18] . With this type of injury, the probability that ankylosis will occur is high.…”

“…Most intracapsular condylar fracture animal models were made by a horizontal cut at the condylar head. MIYAMOTO et al 17 removed the articular layer on the temporal compartment, the condylar articular surface and the disc, with the jaw movements being limited by a wire. They found that limitation of jaw motion hastened the progress of TMJ ankylosis in sheep.…”

The role of muscle grafts in temporomandibular joint ankylosis: short-term experimental study in sheep

“…The sheep were managed in a covered animal house for a week and then returned to a field. This followed the authors' previously published technique [14][15][16][17] .…”

“…These were assessed independently of each other and were scored as 0 for normal to 5 for gross deviation, so the maximum score was 6 in the grading scale of the gap and 10 in the grading scale of the temporal and ramus stumps [11][12][13]17 .…”

“…A model of ankylosis and subsequent reconstruction has been developed [11][12][13][14][15][16][17] . There is only 1 report of experimental studies in sheep using a temporalis muscle graft after discectomy of the TMJ 21 ; this showed that the sheep temporalis muscle does not withstand functional loading within the joint because of insufficient blood supply.…”