<prompt> Following x ray wrist lateral view shows:Lunate dislocationPerilunate dislocationDISIVISI  <response>: Ref. Grainger and Allisons Diagnostic Radiology. Page. 502 Perilunate dislocation X rayAP radiograph Dislocation is often overlookedDisruption of the normally smooth line made by tracing the proximal articular surfaces of the hamate and capitateIncreased overlap of lunate and capitateLateral radiographDislocation more easily appreciableCapitate not sitting within the distal articular cup of the lunateLine drawn through radius and lunate fails to intersect capitate Lunate remains in articulation with distal radius as opposed to lunate dislocation where it is usually in a volar positionAbnormal scapholunate angle normal 30-60 degrees, reduced in dorsal perilunate dislocationAbnormal capitolunate angle normal 0-30 degrees, increased in dorsal perilunate dislocation 