When muscles on opposite sides of a joint develop tension, what determines the direction of joint movement?

Question

Quizplus · Accepted Answer

The direction of joint movement is determined by the net torque, which is the combined force of all the muscles acting on the joint. This means that if muscles on one side of the joint are stronger or have more tension than the muscles on the opposite side, the joint will move in the direction of the stronger muscles. However, if the net torque is equal on both sides of the joint, the joint will remain in a fixed position. Therefore, muscle strength and flexibility alone do not determine the direction of joint movement.

When Muscles on Opposite Sides of a Joint Develop Tension