Author:
Aksenov Andrey Yu.,Klishkovskaya Tatiana A.
Abstract
Background. The effect of different footwear profiles on knee adduction moment have not been fully studied.
Methods. Fifteen healthy volunteer subjects, age 25.3 (±2.73), undertook a series of gait laboratory trials with adapted shoes. Kinematic and kinetic data were collect using 16 Oqus 3+ cameras and the walking speed was controlled using timing gates. High street shoes were adapted to include five different heel heights (varying from a 1.5 cm to 5.5 cm heels), two heel profile conditions (curved and semi-curved heels), three varying apex angles (10, 15, and 20 degrees), and barefoot and 3CR footwear conditions. The baseline shoe had no heel curve, a heel height of 3.5cm, an apex position of 62.5% of the shoe length, an apex angle of 15 deg, and a rigid forepart of the shoe.
Results. The shoe with 5.5 cm heel height significantly increased the mean knee adduction moment during 50%–100% of the stance phase compared to the 1.5 cm heel (p = 0.008). The high heel shoe also significantly increased knee adduction impulse (area under the curve) versus the 1.5, 2.5, and 3.5 cm heels, and the 10° toe angle and barefoot condition. Ten degrees of toe angle reduced mean knee adduction moment during 0%–50% of the stance phase versus 20° and significantly reduced mean knee adduction moment during the late stance phase versus 15° and 20° toe angle footwear conditions. Walking with the curved heel for the healthy subjects increased mean knee adduction moment during 0%–50% of the stance phase compared to the heel without curvature (p < 0.0009).
Conclusion. Further study is required to investigate those changes in patients with high risk of knee osteoarthritis.
Subject
Orthopedics and Sports Medicine,Surgery,Pediatrics, Perinatology, and Child Health
Cited by
1 articles.
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