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2. Most Common Cause of Foot Drop

The most common cause of foot drop is nerve injury. The peroneal nerve controls the muscles that lift the foot; surgery on the knee or hip can damage this nerve. Damage to the nerves in the lower end of the spinal cord, called a nerve root injury, can also cause foot drop. In some cases, tumor or cyst growing in the spinal canal can lead to the symptom, as well.

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