False ankylosis of the temporomandibular joint in a cat. Correction by partial zygomatic arch resection.

Vet Comp Orthop Traumatol

Loic Larguier, Clinique Vétérinaire Benjamin Franklin, 2 rue du Danemark, ZA Porte Océane 56400 Brech, France, E-mail:

Published: September 2016

AI Article Synopsis

  • The study outlines the effectiveness of 2D computer-assisted tomography coupled with 3D reconstruction in diagnosing and planning surgery for a cat with false ankylosis of the temporomandibular joint.
  • A European Shorthaired cat was unable to eat or open its mouth due to an osseous lesion causing joint fusion; surgery successfully removed the lesion, leading to improved jaw function.
  • Follow-up showed the cat maintained jaw movement and showed no chronic pain signs, demonstrating the benefits of advanced imaging in surgical preparation.

Article Abstract

Objective: To describe the use of two-dimensional computer-assisted tomography (CT) with three-dimensional (3D) reconstruction in the diagnosis and planning of surgical treatment of a case of false ankylosis of the temporomandibular joint.

Case Report: A young European Shorthaired cat was presented with the complaint of inability to eat and open its jaws. A CT scan with 3D reconstruction allowed visualization of the lesion which was causing extra-articular ankylosis of the temporomandibular joint. Surgery was performed to resect an osseous lesion of the zygomatic arch, thus freeing the temporomandibular joint. Postoperative physical therapy was initiated immediately following surgery, and then carried out by the owner with a one year follow-up. Clinical examination of the cat was performed during regular office visits (at 1 month and 3 months following surgery), which allowed objective assessment of postoperative recuperation. At the end of a year, the owners reported that the cat had maintained sufficient jaw opening without any signs consistent with chronic pain.

Conclusion: Computed tomography scan with 3D reconstruction allowed planning of the surgical correction of extra-articular ankylosis of the temporomandibular joint, and in this case condylectomy was avoided, since temporomandibular joint range-of-motion was maintained.

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http://dx.doi.org/10.3415/VCOT-15-01-0010DOI Listing

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