what is drop foot caused by
Foot drop is caused by weakness or paralysis of the muscles involved in lifting the front part of the foot. The underlying causes of foot drop are varied and may include: Nerve injury. The most common cause of foot drop is compression of a nerve in your leg that controls the muscles involved in lifting the foot. This nerve can also be injured during hip or knee replacement surgery, which may cause foot drop. A nerve root injury (pinched nerve) in the spine can also cause foot drop.