Isolated humero-ulnar synostosis
ORPHA:94056· ICD-10 Q74.0
Definition
A rare joint formation defect characterized by a bony connection between the humerus and the ulna, resulting in fixed flexion of the forearm, usually near 90°. The condition may be associated with upper limb hypoplasia. It may be sporadic or familial and occur uni- or bilaterally.
- Prevalence
- <1 / 1 000 000
- Inheritance
- Not applicable
- Age of onset
- No data available