Proximal symphalangism

Proximal symphalangism is a very rare, genetic bone disorder characterized by ankylosis of the proximal interphalangeal joints, carpal and tarsal bone fusion, and conductive hearing loss in some patients.

Metacarpophalangeal synostosis

Fusion of a metacarpal bone with the proximal phalanx of the finger distal to it across the corresponding metacarpophalangeal joint.


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PMID (PMCID)