title: [Ball and socket ankle joint and tarsal synostosis (author's transl)].
abstract: Ball and socket ankle joints in 4 patients with "tarsal coalition" have first been described by Lamb and later by others. This report deals with a further case. The boy with a congenitally short left leg and absence of the lateral two toes was seen at the age of 4 months. He was again seen at 11 years of age after a sprain of the right ankle. Roentgen-examination showed calcaneotarsal synostosis and a ball and socket ankle joint with a fatigue fracture of the lateral metatarsal. The shape of the ankle joint appears to be part of a non-inheritable congenital defect with early embryonal disturbance of cleft formation in the tarsus.
mesh_terms: D000015:Abnormalities, Multiple; D000843:Ankle Joint / Q000002:abnormalities*; D002648:Child; D005532:Foot Deformities, Congenital; D005598:Fractures, Spontaneous; D006801:Humans; D007223:Infant; D007870:Leg Length Inequality / Q000151:congenital; D008297:Male; D008684:Metatarsus; D013180:Sprains and Strains; D013580:Synostosis; D013628:Talus / Q000002:abnormalities; D013639:Tarsal Bones / Q000002:abnormalities; D014034:Toes / Q000002:abnormalities
vernacular_title: Tarsale Synostose und talokrurales Kugelgelenk