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Published in: International Orthopaedics 6/2014

01-06-2014 | Original Paper

Gait knee kinematic alterations in medial osteoarthritis: three dimensional assessment

Authors: Dafina Bytyqi, Bujar Shabani, Sebastien Lustig, Laurence Cheze, Natyra Karahoda Gjurgjeala, Philippe Neyret

Published in: International Orthopaedics | Issue 6/2014

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Abstract

Purpose

Although kinematic changes in the sagittal plane of the osteoarthritic knee (OA) have been elucidated, very few studies have analysed changes in the frontal and horizontal planes. Therefore, the aim of this study was to investigate in vivo 3D knee kinematics during walking in patients wth knee OA.

Methods

Thirty patients with medial knee OA and a control group of similarly aged individuals were prospectively collected for this study. All participants were assessed with KneeKGTM system while walking on a treadmill at a self-selected speed. In each trial, we calculated the angular displacment of flexion/extension, abduction/adduction and external/internal tibial rotation. Statistical analysis was performed to determine differences between the knee OA group and the control group.

Results

Patients with knee OA had reduced extension during the stance phase (p < 0.05; 8.5° and 4.4°, OA and control group, respectively) and reduced flexion during pushoff and initial swing phase (p  < 0.05; 41.9° and 49.4°, respectively). Adduction angle was consistently greater for OA patients (p  < 0.05; 3.4° and −0.9°, respectively). Frontal laxity for OA patients was positively correlated with varus deformity (r = 0.42, p < 0.05). There was a significant difference (p)  < 0.05 in tibial rotation during the midstance phase; OA patients retained a neutral position (−0.4°), while the control group presented internal tibial rotation (−2.2°).

Conclusion

Weight-bearing kinematics in medial OA knees differs from that of normal knees. The knee OA group showed an altered “screw-home” mechanism by decreased excursion in sagittal and axial tibial rotation and posterior tibial translation.
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Metadata
Title
Gait knee kinematic alterations in medial osteoarthritis: three dimensional assessment
Authors
Dafina Bytyqi
Bujar Shabani
Sebastien Lustig
Laurence Cheze
Natyra Karahoda Gjurgjeala
Philippe Neyret
Publication date
01-06-2014
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 6/2014
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-014-2312-3

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