congenital temporomandibular joint ankylosis
Findings
No curated finding names congenital temporomandibular joint ankylosis yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Congenital temporomandibular joint ankylosis is a rare maxillofacial disorder characterized by significant reduction in mouth opening (i.e. from a few millimeters to a few centimeters) in the absence of acquired factors (e.g. trauma, infection) contributing to the ankylosis. It is associated with variable degrees of facial dysmorphism (i.e. lateral deviation of the mandible and chin, lower facial asymmetry, retrognathia, micrognathia, dental malocclusion) and patients typically present with feeding and breathing difficulties. Developmental delay, hypotonia, seizures, and additional dysmorphic features (e.g. pectus excavatum, low-set ears, hypoplastic alae nasi) have also been reported.
Definition from the Mondo Disease Ontology (MONDO:0016220), read 2026-09-29. CC BY 4.0.
Where it sits
Other names
1 name
Resolves to: congenital temporomandibular joint ankylosis
- Also called
- congenital trismus