Dorsal intercalated segmental instability associated with malunion of a reconstructed scaphoid
- Authors
- Kim, Joo-hak; Lee, Kwanghyun; Lee, Bong Gun; Lee, C. -H.; Kim, S. -J.; Choi, W. -S.
- Issue Date
- Mar-2017
- Publisher
- SAGE Publications
- Keywords
- Scaphoid malunion; carpal malalignment; dorsal intercalated segmental instability
- Citation
- Journal of Hand Surgery: European Volume, v.42, no.3, pp.240 - 245
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of Hand Surgery: European Volume
- Volume
- 42
- Number
- 3
- Start Page
- 240
- End Page
- 245
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/152776
- DOI
- 10.1177/1753193416680133
- ISSN
- 1753-1934
- 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, 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.
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