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Added by Christian Veillette , last edited by Christian Veillette on Sep 06, 2008  (view change)
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Location Wrist
Diagnosis Scapholunate dissociation
Discussion Plain film of the wrist revealing subluxation of the scaphoid bone with obvious widening between the scaphoid and lunate carpal bones. Widening of the joint space between the scaphoid and lunate, seen with rotatory subluxation of the scaphoid (scapholunate dislocation) space is reminiscent of the gap between the teeth of the British comedian Terry Thomas. It has also been called the David Letterman sign or the Lauren Hutton sign (all people with a gap between their two front teeth.) It is an important sign to recognize, since it is a cause of chronic wrist pain and disability if left untreated.
Reference Frankel VH.: The Terry-Thomas sign. Clin Orthop 1977 Nov-Dec;(129):321-2.
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