Effects of three-dimensional femur and tibia postures on the parameters of standing long-leg radiographs for osteoarthritic knees in elderly female subjects

• Published in: Clinical biomechanics (Bristol) Vol. 117; no. NA; p. 106297
• Main Authors: Otani, Kazutaka, Sato, Takashi, Kobayashi, Koichi, Mochizuki, Tomoharu, Tanifuji, Osamu, Katsumi, Ryota, Kawashima, Hiroyuki
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.07.2024
• Subjects: Hip-knee-ankle angle; Knee osteoarthritis; Lateral distal femoral angle; Medial proximal tibial angle; Physical Medicine and Rehabilitation; Standing position; Three-dimensional posture; Tibial joint line obliquity; Knee osteoarthritis; A-P; Standing position; WCS; FJL; Tibial joint line obliquity; M-L; LDFA; SD; 2D; OA; MA; Hip-knee-ankle angle; TJL; FMA; TJLO; BMI; HKA; CC; K–L; ICC; TMA; UKA; TKA; CR; Medial proximal tibial angle; 3D; CT; ROM; TEA; MPTA; TAA; Three-dimensional posture; FCS; Lateral distal femoral angle; Body mass index; Computed tomography; World coordinate system; Anteroposterior; Kellgren–Lawrence; Intraclass correlation coefficient; Tibial mechanical axis; Range of motion; Hip–knee–ankle angle; Transcondylar axis; Tibial joint line; Osteoarthritis; Computed radiography; Femoral coordinate system; Tibial anteroposterior axis; Two-dimensional; Femoral mechanical axis; Standard deviation; Correlation coefficient; Total knee arthroplasty; Mediolateral; Femoral joint line; Three-dimensional; Unicompartmental knee arthroplasty; Mechanical axis

Long-leg frontal radiographs of the lower extremities are used to assess knee osteoarthritis. Given the three-dimensional (3D) nature of alignment changes in osteoarthritis, postural alterations in the femur and tibia extend beyond the coronal plane (in-plane) to include the transverse and sagittal...