Perilunate and lunate dislocations


  • A perilunate dislocation is disruption of the normal relationship between the lunate and capitate. A lunate dislocation is separation of the lunate from both the capitate and the radius.

    (See Overview of Dislocations.)

    Perilunate and lunate dislocations result when great force is applied to a hyperextended wrist. They usually result from a fall on an outstretched hand or occur in a motor vehicle crash. Perilunate dislocations are more common than lunate dislocations.

    These dislocations cause pain, swelling, and deformity in the wrist and proximal hand.

    If a perilunate or lunate dislocation is not diagnosed and treated promptly, complications can develop. They include

    • Median nerve injury
    • Avascular necrosis of the scaphoid or lunate and deterioration of the joint (scapholunate advanced collapse).

    Perilunate and lunate dislocations meaning & definition 1 of Perilunate and lunate dislocations.

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