Correlation coefficient investigation of the classification of the difference patterns of ipsilateral hip rotational range of motion

Han, Heonsoo; Kubo, Akira; Maruichi, Shizuka; Sadakiyo, Kaori; Kurosawa, Kazuo

doi:10.1016/j.physio.2015.03.3321

Cited by 1 publication

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“…One of the standard procedures for evaluating hip rotational ROM is to measure the movement of the lower leg from the vertical line, which is an imaginary line extending from the center of the patella parallel to the axis of the body trunk when the patient is in the supine position with 90° flexion of the hip and knee 6,7 . In healthy knees, the lower leg is anatomically positioned on this vertical line.…”

Section: Introductionmentioning

confidence: 99%

Influence of Total Knee Arthroplasty on Hip Rotational Range of Motion

et al. 2020

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Background: Total knee arthroplasty (TKA) aims to correct the rotation as well as the alignment and the articulation of the osteoarthritic knee. In this study, we hypothesized that TKA affects hip rotational movement, in addition to improving knee kinematics. The objective was to evaluate the variation in lower extremity alignment and hip rotational range of motion (ROM) with TKA. Methods: A total of 53 knees among 47 patients with primary varus knee osteoarthritis who were scheduled for primary TKA in our institute were enrolled. Hip rotational ROM was measured in the supine position with 90° flexion of the hip and knee before and 3 weeks after TKA. Variations in tibial axis alignment compared to femoral axis alignment by bone resections were also examined as changes in the joint lines of the distal femur and the proximal tibia using plain radiography and computed tomography. Results: The average internal and sum of the internal and external hip rotational ROM increased significantly; however, the external hip rotational ROM was not significantly changed after TKA. The imaging findings also showed that the axis of the lower leg externally rotated 2.5° with a 4° external rotation of the distal femur and a 6.5° 3 correction of the varus deformity. Conclusion: TKA was proven to vary the neutral position of hip rotational movement and to increase hip rotational range of motion.

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Section: Introductionmentioning

confidence: 99%