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. Author manuscript; available in PMC: 2013 May 2.
Published in final edited form as: Clin Biomech (Bristol). 2008 May 13;23(7):937–945. doi: 10.1016/j.clinbiomech.2008.03.071

Figure 2.

Figure 2

Experimental set-up. A) Subjects were seated in a biodex chair with the right leg extended. The apex of the patella was aligned with the center of rotation of the servomotor. The right leg was fixed within a coupling ring with a cast placed around the ankle joint. The coupling ring was fixed to a servomotor actuator with a precision potentiometer and tachometer. The knee was fitted within a bracket mounted firmly at the medial and lateral femoral epicondyles. Together with a thigh strap, the brackets isolated the knee adduction–abduction movement from the abduction–adduction movement of the hip joint. B) The servomotor acted to move the lower limb into varus and valgus. C) The movement profile used in the experiment.