Therefore, supination-pronation movements were only possible by rotating the forearm around the radioulnar joint.
The forearm contains two long bones, the radius and the ulna, forming the radioulnar joint.
Radioulnar synostosis is one of the more common failures of separation of parts of the upper limb.
The hand becomes maximally pronated, resulting in a joint lock on the wrist and radioulnar joint.
It is one of two joints between the radius and ulna, the other being the proximal radioulnar articulation.
Most examples of radioulnar synostosis are isolated (non-syndromic).
The distal radioulnar articulation is the one of the two closest to the wrist and hand.
The superior radioulnar joint shares joint capsule with the elbow joint but plays no functional role at the elbow.
