OBSOLETE: Familial chondromalacia patellae

What is OBSOLETE: Familial chondromalacia patellae?

Familial chondromalacia patellae is an extremely rare, inherited patellar dysostosis disorder characterized by chondromalacia of the patella associated with patellar pain and dislocation (distal displacement) upon knee extension. Male-to-male transmission is reported. There have been no further descriptions in the literature since 1963.

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