ArticleSensors (Basel, Switzerland)2022
Applied Assessment Method for Varus Thrust during Walking in Patients with Knee Osteoarthritis Using Acceleration Data Measured by an Inertial Measurement Unit.
Article in Sensors (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 13 citations in OpenAlex.
- Biomechanics of knee osteoarthritis from local knee loading to whole kinetic chain imbalance: a narrative review.Frontiers in bioengineering and biotechnology · 2026Review
- Defining and measuring varus thrust in knee osteoarthritis: A scoping review of current evidence and challenges.Osteoarthritis and cartilage open · 2025Review
- Wearable sensor systems measure differences in knee laxity between healthy and affected knees during dynamic exercise activities: A systematic review.Journal of experimental orthopaedics · 2024Review
- Association of the Degree of Varus Thrust during Gait Assessed by an Inertial Measurement Unit with Patient-Reported Outcome Measures in Knee Osteoarthritis.Sensors (Basel, Switzerland) · 2023Article
- Article
- A Novel Classification of Coronal Plane Knee Joint Instability Using Nine-Axis Inertial Measurement Units in Patients with Medial Knee Osteoarthritis.Sensors (Basel, Switzerland) · 2023Article
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Authors and funding
5 authors at 4 institutions in 1 country.
Funding
Abstract
We developed a novel quantitative method to assess varus thrust during walking using acceleration data obtained from an inertial measurement unit (IMU). This study aimed to examine the reliability of the developed index and to evaluate its ability to distinguish patients with knee osteoarthritis (OA) with varus thrust from healthy adults. Overall, 16 patients with knee OA and 16 healthy adults walked on a treadmill with IMUs attached to the tibial tuberosity and lateral femoral condyle. As an index of varus thrust, we used the root mean square (RMS) of acceleration in the mediolateral direction. This value was adjusted by dividing it by swing speed while walking (adjusted RMS, A-RMS) because the RMS of the acceleration was strongly coupled with the speed of motion. The intraclass correlation coefficients of A-RMS of the tibia and femur were 0.85 and 0.73, respectively. Significant differences were observed in the A-RMSs of the tibia and femur, with large effect sizes between the patients with knee OA and healthy adults (Cohen's d: 1.23 and 0.97, respectively). Our results indicate that A-RMS has good test-retest reproducibility and can differentiate patients with varus thrust from healthy adults.
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Registered trials
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