Rare diseases · Sign or symptom
Temporomandibular joint ankylosis
Freezing of jaw joint
HP:0012478
What it means
Bony fusion of the mandibular condyle to the base of the skull, resulting in limitation of jaw opening.
Rare diseases that can present with this6
Very common80–99%
3The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Adhesion of the temporomandibular joint · Ankylosis of temporomandibular joint · Freezing of the temporomandibular joint · Jaw ankylosis · Rigidity of the temporomandibular joint · Temporomandibular joint fusion
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.