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Related to Radioulnar joint: radiocarpal joint, Proximal radioulnar joint
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These fractures can affect the function of both the radiocarpal and distal radioulnar joints.
Ulnar impaction syndrome is a common cause of a spectrum of pathoanatomical changes to the distal radioulnar joint (DRUJ).
8, 9, 10] The optimal position of immobilization of the radioulnar joint is controversial, although immobilization in supination has been proposed.
A cadaveric study of the anatomy and stability of the distal radioulnar joint in the coronal and transverse planes.
In moving from full forearm supination to pronation, the space available for the distal biceps tendon at the proximal radioulnar joint decreases by 50%.
In few cases of comminutted intraarticular fractures radio ulnar pinning was done to stabilize the articular fragments and also the distal radioulnar joint as described by Stein.
These investigators found that increased dorsal angulation correlated with incongruity of the distal radioulnar joint.
10(10%) pateints had pain in the distal radioulnar joint.
The patient's injury remained neurovascularly intact, but radiographic studies revealed distal radioulnar joint separation, with loss of radial height along the ulnar aspect (Fig.
The relationship of the radiohumeral, radioulnar, ulnohumeral radiocarpal, distal radioulnar joint and the interosseous space must be perfect, otherwise some functional impairment will result.
Cadaveric sections have shown that there is a 50% reduction in the proximal radioulnar joint space when moving from full supination to full pronation.
The main causes of limitation of rotations were residual angulatory deformity (Especially if it resulted in narrowing of the interosseous space), residual posterior angulation of the ulnar fracture, residual rotational malalignment of the fracture fragments, and derangement of the inferior radioulnar joint owing to relative shortening of the radius.