Foot Drop is a condition in which the foot is in an extended position with little or no ability to dorsiflex the muscles to bring the foot to a neutral position. This is caused by weakness, lack of use, and/or paralysis of the dorsiflexion muscles of the leg. Foot Drop is common in stroke patients who have some paralysis. Only passive range of motion (force applied by therapist or patient to move the muscles without any muscle function of the joints) will bring the ankle to the neutral position (0º). If left untreated, a contracture can develop resulting in a shortening of the Achilles Tendon, leaving the foot inflexible.