Peer-reviewed veterinary case report
Temporomandibular joint ankylosis in cats and dogs. A report of 10 cases.
- Journal:
- Veterinary and comparative orthopaedics and traumatology : V.C.O.T
- Year:
- 2007
- Authors:
- Maas, C P H J & Theyse, L F H
- Affiliation:
- Department of Clinical Sciences of Companion Animals · Netherlands
Plain-English summary
Temporomandibular joint (TMJ) ankylosis is a condition where pets have trouble or cannot open their mouths. In a study of five cats and five dogs, researchers found that some cases were caused by trauma, while others were linked to tumors. They used advanced imaging to understand the problem better and plan for surgery. For pets with trauma-related ankylosis, surgery to remove the affected tissue worked well, but unfortunately, two dogs with tumor-related ankylosis had to be euthanized. Overall, the treatment was successful for the trauma cases, but the outcome was not good for the dogs with tumors.
Abstract
Temporomandibular joint (TMJ) ankylosis is characterized by difficulty or inability to open the mouth. The ankylosis may be articular ('true') or extra-articular ('false'). Clinical signs, radiographic studies, treatment and follow-up are presented in a retrospective study involving five cats and five dogs. The findings were compared with TMJ ankylosis in humans. CT imaging with three-dimensional reconstruction proved to be of great value in determining the extent of the abnormalities and helped with preoperative planning. Articular TMJ ankylosis occurred in six animals and extra-articular TMJ ankylosis was found in the other four cases. In three cats and in three dogs, the TMJ ankylosis was trauma related; the remaining patients were diagnosed with a tumour. Resection of ankylosing tissue in false ankylosis or gap arthroplasty in true ankylosis was successful in all of the trauma induced cases. In the two cats, with tumour related ankylosis, the ankylosis was caused by an osteoma and resection had a good prognosis, whereas the two dogs had to be euthanatized.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/17846685/