The roll of the antagonistic muscles in the calculation of muscle moments during trochlearthrosis work.
From the biomechanic point of view, the osteo-myo-articular system works as a physical pulley instead of working as a simple closing and opening of the angle formed between two arms of lever turning around the same point of support. The vector which expresses the force of muscular flexion being always 'sliding'; its moment is constant independently of the angular value between the bone segments which are in flexion.
D001696:Biomechanical Phenomena; D006801:Humans; D007596:Joints / Q000502:physiology*; D009119:Muscle Contraction