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Dorsal intercalated segmental instability associated with malunion of a reconstructed scaphoid

Authors
Kim, JH | Lee, KH | Lee, BG | Lee, CH | Kim, SJ | Choi, WS
Citation
The Journal of hand surgery, European volume, 42(3). : 240-245, 2017
Journal Title
The Journal of hand surgery, European volume
ISSN
1753-19342043-6289
Abstract
We analysed scaphoid deformity as a result of surgical treatment of scaphoid fracture nonunion and assessed the deformity associated with a dorsal intercalated segmental instability pattern of carpal malalignment. A total of 45 patients who were treated for scaphoid fracture nonunion were included in the study. The height-to-length ratio of the scaphoid was measured on computed tomographic images and used to assess scaphoid deformity. Carpal malalignment was quantified based on the radio-lunate angle. A correlation analysis between the height-to-length ratio and the radio-lunate angle was performed. Dorsal intercalated segmental instability was defined as a radio-lunate angle >15 degrees , and a receiver operating curve analysis was used to calculate the cutoff height-to-length ratio that can be accompanied with dorsal intercalated segmental instability. Extension of the lunate increases in proportion to the flexion deformity of the scaphoid: dorsal intercalated segmental instability can occur if the height-to-length ratio of the scaphoid is >0.73.
LEVEL OF EVIDENCE: IV.
MeSH

DOI
10.1177/1753193416680133
PMID
27920391
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Orthopedic Surgery
Ajou Authors
최, 완선
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