spilled teacup sign

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spilled teacup sign2016-11-22T14:23:23+00:00

spilled teacup sign 

spilled teacup sign 1 image from New Medical Terms

spilled teacup sign

IMAGING 

A radiologic sign seen in ligamentous instability of the wrist in which a hyperextension injury results in a lunate and perilunate dislocation, causing the scaphoid to extend and strike the dorsal margin of the distal radius. Rupture of both the volar radioscaphoid and the scapholunate

schematic of spilled tea cup sign image from New Medical Terms

schematic of spilled tea cup sign

ligaments frees the proximal scaphoid, and compressive forces pin the capitate between the scaphoid and lunate. Unchecked dorsiflextion displaces the distal carpal row to a position dorsal to the lunate and radius. In this background, further hyperextension ruptures the dorsal radiocarpal ligament causing volar displacement of the lunate, the concave surface of which corresponds to the “teacup”.

Physical exam Assess the median nerve, which may be injured or compressed by the “pile-up” in the wrist.

Management Orthopaedic intervention is required.

References http://imgbuddy.com/lunate-dislocation-spilled-teacup.asp

http://imgbuddy.com/lunate-dislocation-spilled-teacup.asp

http://radiopaedia.org/articles/spilled-teacup-sign

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