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Slice 6 of 1
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XRMusculoskeletalConfirmedFRCR 2B
Trans-scaphoid perilunate dislocation
Clinical Presentation
A 20-year-old male presents to the Emergency Department following an acute mechanical injury, complaining of severe pain, deformity, and restricted joint movement.
- 1Fracture of the scaphoid with dorsal dislocation of the carpus relative to the lunate
- 2CT confirms the findings seen on the plain films, and better delineates the multiple small fragments at the scaphoid fracture
- 3Note how the radiolunate joint is a little widened but remains aligned
- 4Capitate (C, blue) is dislocated dorsal to the lunate (L, yellow)
- 5The proximal pole of the scaphoid (PP) has remained aligned with the lunate, whereas the distal pole (DP) has followed the capitate dorsally
- 6The lunate and the distal radius (green) remain normally aligned.