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Journal of Experimental Orthopaedics
Fig. 1 | Journal of Experimental Orthopaedics

Fig. 1

From: Technical note: sensitivity analysis of the SCoRE and SARA methods for determining rotational axes during tibiofemoral movements using optical motion capture

Fig. 1

Coordination systems in the femur and tibia. Both coordination systems of the tibia and femur based on the SCoRE and SARA data. u1: the axis of rotation fixed in the tibia system; v1: the axis of rotation fixed in the femur system; u2 and v2: the cross product of the first and third axes; v3: vector from the center of rotation of the femur to the center of rotation of the hip; u3: vector from the center of rotation of the tibia to the center of the ankle. a Coinciding axis of rotation and therefore no anterior tibia translation. b Anterior translation and external rotation of the tibia

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