Hip-to-calcaneus alignment differs from hip-to-talus alignment in patients with genu varum deformity
Autor: | Gi Won Choi, Sang-Gyun Kim, Hak Kyu Kim, Jae Gyoon Kim |
---|---|
Rok vydání: | 2020 |
Předmět: |
Adult
Male medicine.medical_specialty Knee Joint Radiography Genu varum Patient Care Planning Talus Weight-Bearing Young Adult 03 medical and health sciences 0302 clinical medicine Genu Varum medicine Deformity Humans Orthopedics and Sports Medicine In patient Aged Retrospective Studies Aged 80 and over Orthodontics 030222 orthopedics Hip Receiver operating characteristic business.industry Significant difference 030229 sport sciences Middle Aged Osteotomy Calcaneus Orthopedic surgery Female Surgery medicine.symptom business |
Zdroj: | Knee Surgery, Sports Traumatology, Arthroscopy. 29:975-981 |
ISSN: | 1433-7347 0942-2056 |
Popis: | 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.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.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° ± 1.8° vs. 4.4° ± 2.5°; P 0.001). The COV of the HKA angle that caused inconsistency in the two orthoradiograms was 4.0° (area under the curve, 0.774).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.IV. |
Databáze: | OpenAIRE |
Externí odkaz: |