Deformities and Limitation of Motion of the Forearm
Pronation and supination are complex movements of the forearm that enable positioning the hand appropriately to execute functions related to the activities of daily living. Recent studies suggest that pronation and supination are not brought about by mere movement of the radius around a static ulna but entails movement of the radius, ulna, and the interosseous membrane (Weinberg et al. 2000; Nakamura et al. 1999). The integrity and normal structure of the proximal and distal radioulnar joints, the radius and ulna, the interosseous membrane, and the muscles that pronate and supinate the forearm are all needed for normal forearm motion. It follows that abnormalities in any of these structures can compromise pronation and supination (Ogino and Hikino 1987; Dal Monte et al. 1987; Yasutomi et al. 2002; Tynan et al. 2000; Price et al. 1990; Sibinski et al. 2007; Kreulen et al. 2007) (Fig. 28.1).
KeywordsRadial Head Facial Dysmorphism Forearm Rotation Interosseous Membrane Distal Radioulnar Joint
This child with a congenital radioulnar synostosis is attempting to comb his hair. The awkward way in which he does it is evident (MPG 4420 kb)
The same child as in Video 23.1 is demonstrating how he gets his hand to his mouth. The excessive adduction and external rotation of the shoulder which are compensatory mechanisms are seen (MPG 4573 kb)
The child is demonstrating how he mops his face and forehead (MPG 4830 kb)
- Joseph B. Elbow problems in children. In: Gupta A, Kay SPJ, Schecker RL, editors. The growing hand. London: Mosby; 2000. p. 769–82.Google Scholar
- Zancolli EA, Zancolli ER. Reconstructive surgery in brachial plexus sequelae. In: Gupta A, Kay SPJ, Schecker RL, editors. The growing hand. London: Mosby; 2000. p. 805–23.Google Scholar