Knee osteoarthritis (Knee-OA) is a disease caused by age-related muscle weakness, obesity, or sports injury, and it has been estimated to occur in approximately half of all people by the age of 85. One of the characteristics of knee-OA is rotation dyskinesia of the knee joint due to the degeneration of the system around the knee. This rotation movement, a key element of walking, is crucial for impact absorption, balanced walking, and stabilization of the knee joint. In the present study, we focused on the rotation of the lower leg relative to the movement of the ankle joint during the walking stance phase, and we developed a mechanical orthosis that induces rotation of the lower leg in conjunction with the movement of the ankle joint mechanically. The mechanical induction of rotation movement uses the movement difference due to the angle change of the inside and outside bars in conjunction with the ankle angle. We verified the effectiveness of the developed orthosis by measuring the amount of rotation and by administering the Womac test in 5 subjects with knee osteoarthritis. The results confirmed the effectiveness of our orthosis.
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| http://dx.doi.org/10.1109/ICORR.2019.8779506 | DOI Listing |
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