Radial club hand/ Manus valgus is due to: March 2013 (f)

Ans. B i.e. Absence of radius Radial dysplasia/ Radial club hand/ Radial longitudinal deficiency It is a congenital difference occurring in a longitudinal direction resulting in radial detion of the wrist and shoening of the forearm. It can occur in different ways, from a minor anomaly to complete absence of the radius, radial side of the carpal bones and thumb. Hypoplasia of the distal humerus may be present as well and can lead to stiffnes of the elbow. Radial detion of the wrist is caused by lack of suppo to the carpus, radial detion may be reinforced if forearm muscles are functioning poorly or have abnormal inseions