title: Congenital contracture of the quadriceps muscle. Four case reports in identical twins.
mesh_terms: D000328:Adult; D002675:Child, Preschool; D004200:Diseases in Twins; D005260:Female; D005269:Femur / Q000294:innervation* / Q000473:pathology / Q000601:surgery; D006616:Hip Contracture / Q000151:congenital* / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D006801:Humans; D007719:Knee Joint; D008297:Male; D013710:Tendons / Q000473:pathology