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lunate dislocation
Etiology:
- acute traumatic injury
- fall on outstretched hand
- automobile accident
Pathology:
- ulnar deviation & hyperextension of the wrist
Radiology:
- radiographs of the hand & wrist
- stress radiographs with radial & ulnar deviation can be helpful
- digital block prior to stress radiographs?
- widening of space between the lunate & scaphoid
- lateral view may show "spilled teacup sign" when the lunate is not in line with the radius & capitate
Complications:
- injury to the median nerve is the most common complication
- distal radius fractures, scaphoid fractures
Management:
- consultation with a hand surgeon
Related
lunate bone
General
wrist injury
joint dislocation
References
- Cimino-Fiallos N
14 Can't-Miss Hand Emergencies
Medscape. March 5, 2021
https://reference.medscape.com/slideshow/hand-emergencies-6010180