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Open-mouth jaw locking in a 5-year-old Persian cat: a case report
Manuel Fuertes-Recuero1,2, Javier Collados3, Felipe de Vicente3
1Veterios Veterinary Hospital, C. de Arrastaria, 23, Madrid, 28022, Spain. manufuer@ucm.es.
Veterinary Research Communications
|September 12, 2024
Summary
Open-mouth jaw locking in cats is rare. Computed tomography (CT) imaging is crucial for diagnosing temporomandibular joint (TMJ) subluxation, enabling successful treatment and preventing recurrence.
Area of Science:
- Veterinary Medicine
- Comparative Anatomy
- Diagnostic Imaging
Background:
- Open-mouth jaw locking is an infrequent condition in feline patients.
- This case involves a Persian cat presenting with acute inability to close its mouth and ptyalism.
Observation:
- Physical examination revealed reduced jaw motion and asymmetric malocclusion with mandibular displacement.
- Computed tomography (CT) identified bilateral temporomandibular joint (TMJ) subluxation and abnormal coronoid process positioning.
Findings:
- Manual reduction of the jaw locking resolved the condition.
- Post-reduction CT confirmed complete TMJ subluxation reduction.
- Supportive care included meloxicam and protective devices for two weeks.
Implications:
- This case underscores the diagnostic value of CT and 3D reconstruction for feline TMJ subluxation.
- Early and accurate diagnosis facilitates successful treatment and long-term recovery.
- Highlights the importance of advanced imaging in diagnosing rare feline oral conditions.

