Our long-time neighbor may have had it. He couldn't keep the toe of his foot elevated and it would cause him to trip at times. He had to remember to keep his toes up...or he could fall down. He never did have surgery on it, as I remember--but perhaps his wasn't real bad.
I did find this on the internet:
'Foot drop' is a general term that describes loss of the ability to raise the foot at the ankle. This leads to difficulty in walking and a floppy-appearing foot. There are many causes, but injury to the peroneal nerve is a very important reason for foot drop. This nerve supplies the tibialis anterior muscle, which is responsible for lifting the foot; injury to the nerve results in foot drop.
Before and After Videos
Causes of Foot Drop Injury
Foot Drop Surgery Information
Injury to the nerve can occur anywhere from the spine region all the way down to the area of the knee. Surgical treatment is often very useful in improving foot drop, depending on the circumstances. A complete injury to the peroneal nerve high up in the thigh or spine area is usually permanent and surgery at the level of the injury does not help. However, a new treatment using nerve transfers from the adjacent tibial nerve has the potential to correct the problem. Dr. Nath has pioneered the use of this surgical procedure for foot drop caused by hip replacement surgery and other injuries. The nerve transfer must be done within six to eight months of the onset of the foot drop for best results.
In other cases, the nerve is stretched by knee injuries and in this case a simple decompression surgery can restore function. In either case, Dr. Nath can provide consultation for possible surgical correction of the problem. If therapy or conservative management is better, then he can provide information for this as well.
If nerve surgery is not appropriate in a particular case, then tendon transfers can be used instead to help improve ankle stability, function and walking