Moment Arm of quadriceps muscle
Posted: Wed Mar 20, 2013 9:15 pm
Hi All.
I have a question about the estimation of moment-arm into OpenSim. I created two rectus femoris muscle, one is attached to the patella and the other is attached to the tibia. The motion of each muscle is almost the same. The muscle-tendon length according to the knee flexion angle is quasi-similar. However, when I estimate the muscle moment-arm, I have a huge difference.
Does anyone have an explanation ?
Please find attached the Osim file containing the two rectfem muscles and the resulting moment-arm and muscle-tendon length for both muscles.
Thanks
Pauline
I have a question about the estimation of moment-arm into OpenSim. I created two rectus femoris muscle, one is attached to the patella and the other is attached to the tibia. The motion of each muscle is almost the same. The muscle-tendon length according to the knee flexion angle is quasi-similar. However, when I estimate the muscle moment-arm, I have a huge difference.
Does anyone have an explanation ?
Please find attached the Osim file containing the two rectfem muscles and the resulting moment-arm and muscle-tendon length for both muscles.
Thanks
Pauline