Cockshott and Omololu (1958) described a father and his infant daughter with congenital posterior dislocation of the radial head. Neither could extend their elbows below the right angle, whereas pronation and supination were unrestricted. The tendons of insertion ... Cockshott and Omololu (1958) described a father and his infant daughter with congenital posterior dislocation of the radial head. Neither could extend their elbows below the right angle, whereas pronation and supination were unrestricted. The tendons of insertion of both biceps stood out prominently in the father's antecubital fossae, raising skin webs. Reichenbach et al. (1995) reported on 4 cases of congenital posterior dislocation of radial heads in 3 generations of a family with 3 instances of male-to-male transmission. All affected subjects had mild limitation of extension and a strong restriction of rotation in the elbows. Shun-Shin (1954) observed this disorder associated with antecubital pterygium (178200) in members of 3 generations of a family.