Hip-to-calcaneus alignment differs from hip-to-talus alignment in patients with genu varum deformity
- Authors
- Kim, Sang-Gyun; Choi, Gi Won; Kim, Hak Kyu; Kim, Jae Gyoon
- Issue Date
- 3월-2021
- Publisher
- SPRINGER
- Keywords
- Hip-to-talus radiograph; Hip-to-calcaneus radiograph; Alignment; Weight-bearing line
- Citation
- KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, v.29, no.3, pp.975 - 981
- Indexed
- SCIE
SCOPUS
- Journal Title
- KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
- Volume
- 29
- Number
- 3
- Start Page
- 975
- End Page
- 981
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/49516
- DOI
- 10.1007/s00167-020-06060-y
- ISSN
- 0942-2056
- Abstract
- Purpose To (1) compare the weight-bearing line (WBL) ratios of the knee joints measured using the conventional (hip-to-talus radiographs, HTRs) and novel (hip-to-calcaneus radiographs, HCRs) orthoradiograms, (2) compare the hip-knee-ankle (HKA) angle between cases with < 5% and > 5% differences in WBL ratios between two orthoradiograms, and (3) investigate the optimal cutoff value (COV) of the HKA angle causing inconsistency in the orthoradiograms. Methods Sixty limbs of 31 patients with HTR and HCR records were retrospectively reviewed. After drawing the mechanical axis on each radiograph, the WBL ratios of the knees were calculated and compared between the conventional and novel orthoradiograms. In subgroup analysis, cases with < 5% and > 5% differences in WBL ratios between two orthoradiograms were classified as consistent and inconsistent groups, respectively. Receiver operating characteristic curve based on the HKA angles of the lower limbs was used to identify the COV causing the inconsistency between the orthoradiograms. Results Inter- and intra-rater reliabilities of all radiologic measurements were > 0.75. The WBL ratios showed no significant difference between the two orthoradiograms. However, the HKA angle was significantly larger in the inconsistent group than in the consistent group (7.0 degrees +/- 1.8 degrees vs. 4.4 degrees +/- 2.5 degrees;P < 0.001). The COV of the HKA angle that caused inconsistency in the two orthoradiograms was 4.0 degrees (area under the curve, 0.774). Conclusion The hip-to-calcaneus alignment differed significantly from the hip-to-talus alignment in patients with genu varum deformity. HCR measurement can be a complementary method for planning corrective osteotomy for patients with genu varum deformity.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Medicine > Department of Medical Science > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.