1. Retrolunar dislocation of the capitate bone with fracture or with subluxation of the navicular is one type of carpal injury.
2. Reduction of the dislocation by manipulation can be accomplished if done early. If this is not successful, open reduction must be carried out.
3. If there is an associated navicular fracture, and satisfactory alignment of the fragments is not obtained by manipulation, open reduction and insertion of a bone graft should be done.
4. In neglected cases of this type of injury, the choice of treatment rests between excision of the first row of the carpus and wrist fusion.
Fracture Clinic of the Massachusetts General Hospital, Boston