What is dorsal subluxation of the distal ulna?

What is dorsal subluxation of the distal ulna?

The cause for dorsal subluxation is extreme pronation and extension, with a strengthened extensor carpi ulnaris and ulnar carpal ligaments, which pull the ulnar head out through the dorsal capsule. Triangular fibrocartilage complex avulsion and weaking of the palmar radioulnar ligament will allow this dislocation.

What is the distal ulnar?

Introduction. The distal ulna represents the fixed point around which the radius and the hand acts in daily living. The significance of distal ulnar fractures is often not appreciated and often results in inadequate treatment in comparison to its larger counterpart; the radius.

How can ulnar dislocation be reduced?

In dorsal dislocations of the ulna, reduction is accomplished with gentle traction, dorsal pressure (translational force) over the ulnar head, and supination. The joint must be assessed for instability and typically is most stable in supination [4].

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.

How do you fix a Subluxed wrist?

Non-surgical treatment of ECU subluxation consists of splinting or casting, as with other wrist tendon injuries, which will hold the joint in place and keep movement from exacerbating the problem and allowing the tendon to rest in its appropriate position while healing.

Where is the distal ulna located?

The lateral, distal end of the ulna is the head of the ulna. It articulates with the ulnar notch on the radius and with the triangular articular disc in the Wrist Joint.

What is distal fracture?

Distal radius fractures are one of the most common types of bone fractures. They occur at the end of the radius bone near the wrist. Depending on the angle of the break, distal radius fractures can be classified into two types: Colles or Smith. Falls are the main cause of distal radius fractures.

What is distal radius joint?

Distal radioulnar joint (DRUJ) is a pivot type synovial joint located between the radius and the ulna just proximal to the wrist joint and assists in pronation and supination of the forearm. The joint is critical to the working of the forearm as a mechanical unit.

What is a DRUJ procedure?

It involves the removal of a very small section of bone from the ulna bone close to the wrist followed by fixation with a plate. The effect of slightly shortening the ulna bone is to tighten the ligaments between the radius and ulna bones and so provide greater stability to the DRUJ.