Intraindividual variance of lower limb rotation in patients with bilateral knee osteoarthritis

Autor: Xin Zheng, Yang-yu-fan Wang, Wang-yi Jin, Chao-ran Huang, Zi-wen Yan, Da-lin Peng, Shen Zhou, Kai-jin Guo, Sheng Pan
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Frontiers in Surgery, Vol 10 (2023)
Druh dokumentu: article
ISSN: 2296-875X
DOI: 10.3389/fsurg.2023.964160
Popis: PurposeTo determine the side-to-side difference in intraindividual rotation alignment of patients with bilateral varus-type knee osteoarthritis (OA) and compare it with control subjects.MethodsThis retrospective study enrolled 60 patients with bilateral varus-type knee OA and 50 control subjects. All cases underwent bilateral lower limb CT angiography. Bilateral femoral and tibial rotation alignment were measured, and the overall lower limb rotation was calculated by two different methods. Method 1 was calculated by subtracting angle of the femoral torsion from the tibial torsion and method 2 was determined by relative rotation of the femoral neck angle to bimalleolar angle. The intraindividual variance and differences between the two groups were analyzed.ResultsBoth OA and control samples showed significant differences between right and left for all measurements. Femoral torsion for control group was 10.4 ± 5.5°, tibial torsion was −22.1 ± 6.1°, and overall leg rotation by method 1 was −15.6 ± 7.2° and method 2 was −11.7 ± 8.2°. Femoral torsion, tibial torsion, method 1, and method 2 in the patients with OA were 8.2 ± 6.3°, −18.6 ± 4.1°, −14.9 ± 7.9°, and −10.4 ± 7.6°, respectively. Patients with OA showed a more pronounced retroversion in the femur (p = 0.008) and more internal rotation in the tibia (p
Databáze: Directory of Open Access Journals