What causes DRUJ instability?
Distal Radioulnar Joint Instability occurs when articular contact between the two forearm bones at the wrist follows an abnormal path in rotation. Though this is an exceptionally stable and mobile joint, it is prone to injury when someone falls on an outstretched hand (FOOSH) with the wrist pronated.
How do you treat a DRUJ injury?
Treatment include splinting, ORIF of fractures and repair of torn ligaments and TFCC by arthroscopy or open methods. In late presentations, instability is addressed by various techniques which have been described. DRUJ arthroplasty is emerging as a treatment in cases of arthrosis of the joint.
What is DRUJ injury?
Distal radioulnar joint (DRUJ) injuries can occur separately or in conjunction with distal radius fractures and both-bone forearm fractures. In fact, nearly 60 percent of forearm fractures adversely affect the DRUJ.
What is a DRUJ dislocation?
Isolated acute distal radioulnar joint (DRUJ) dislocation is a rare injury [1]. It is usually associated with fractures of either the radius or ulna. Sometimes it is part of a more complex injury like the Essex–Lopresti injury in which a fracture of the proximal radius and rupture of the interosseus membrane occurs.
How do you test for DRUJ instability?
Different physical tests for the diagnosis of DRUJ instability have been described, including the Ballottement test, radius pull test, clunk test, extensor carpi ulnaris (ECU) test, and press test. The Ballottement test is considered the most reliable physical examination test for DRUJ instability.
What makes up the distal radioulnar joint?
The distal radioulnar joint is the articulation between the crescent-shaped convex distal head of ulna and the concave ulnar notch of radius. Both surfaces are lined by the hyaline cartilage. The joint contains a triangular fibrocartilaginous articular disc.
How do I check my DRUJ?
How do you prevent distal ulnar dislocation?
In most cases of isolated volar ulna dislocation, the injury is reduced under general anaesthetic by forceful manipulation of the joint, using manual pressure on the ulna in a medial and dorsal direction, and hyperpronation of the forearm.
How do you prevent a DRUJ dislocation?
For most simple cases, anterior DRUJ dislocation can be treated successfully with closed reduction, followed by an above-elbow cast for a duration of three to six weeks [2, 14, 15, 18, 22, 25, 26].
What is a shuck test?
a diagnostic assessment method designed to assess joint laxity and instability in which force is applied to a joint in a specific direction to assess the amount of translation of the articulating surfaces and to determine whether the maneuver successfully reproduces the symptoms.
What kind of joint is the distal radioulnar joint?
pivot type synovial joint
The distal radioulnar joint is a pivot type synovial joint existing between the ulnar notch of the distal radius and the head of the ulna.
What is radio ulnar?
Radioulnar synostosis is a rare condition in which the two bones of the forearm — the radius and the ulna — are abnormally connected. This limits rotation of the arm. It can also occur as the result of a forearm fracture or trauma.