The Journal of Bone and Joint Surgery (American) 84:S1-S66 (2002)
© 2002 The Journal of Bone and Joint Surgery, Inc.
Wrist Terminology as Defined by the International Wrist Investigators' Workshop (IWIW)
Louis A. Gilula, MD,
Frederick A. Mann, MD,
James H. Dobyns, MD and
Yuming Yin, MD and the Members of the IWIW (International Wrist Investigators' Workshop Terminology Committee)
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ADAPTIVE CARPUS (FIGURE 1)
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Fig. 1: ADAPTIVE CARPUS-ADAPTIVE DISI: the distal articular surface of the radius is inclined 30° dorsally from an old impacted distal radius fracture. The lunate is tilted dorsally to account for dorsal inclination of the distal radius, while the capitate is in neutral position following the position of the metacarpals with the hand. Changes in the carpal alignment creates a capitolunate angle of approximately 30° and a scapholunate angle of 85°. The increased scapholunate angle creates a DISI (dorsal intercalated segmental instability) configuration.
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SYNONYM: none
CLINICAL: NA
RADIOLOGIC: a carpal malalignment usually identified by a dorsal or volar tilt of the lunate caused by an extracarpal osseous abnormality, usually a distal radial malunion without ligament tears
COMMENTS: 1) every carpus must adjust in some way to alterations of the radius articular surface, the ulnar head position, and the shape or size of the carpal bones even . . . [Full Text of this Article]

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