title: Familial aplasia or hypoplasia of the patella.
abstract: A father with bilateral absence of the patella and his son with pronounced hypoplasia of the patellae are described. A possible relationship between this syndrome and hereditary osteo-onycho-dysplasia is discussed.
mesh_terms: D000293:Adolescent; D001848:Bone Diseases, Developmental / Q000000981:diagnostic imaging / Q000235:genetics; D006801:Humans; D008297:Male; D010329:Patella / Q000002:abnormalities* / Q000000981:diagnostic imaging; D010375:Pedigree; D011859:Radiography