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Transstyloid Perilunar Dislocation

- See: Trans-scaphoid Perilunar Dislocation

- Discussion:
    - occurs as oblique frx through radial styloid, extending thru scapholunate ligament and around the lunate, through the triquetral attachments;
    - due to the radiocapitate ligament, the fractured styloid process migrates  with the distal carpal row;
    - because styloid is held by radiolunate and radioscaphoid ligaments, reduction is usually possible, but proximal displacement w/ scaphoid is common;

- Treatment:
    - screw fixation of the styloid may be required;
    - repair of the scapholunate ligament is recommended to avoid SLD