You have foot drop because of nerve damage. I highly reccomend talking to a physical therapist or your doc about the turbomed brace! Google it. Because I had nerve damage during my right total knee replacement 7wks ago my surgeon ordered this brace because i was tripping. When nerves are cut during surgery and never heal(grow back together) the nerves can no longer tell your muscles what to do and muscles begin to atrophy and require ongoing exercise and stretching to prevent this. Without regular stretching the muscles atrophy and eventually you may be unable to put your heel down on the floor. But you sound like you have the exercise thing covered! Good luck to you! My surgeon said my Pereoneal nerve was stretched during surgery but that it would resolve itself in first he said a few weeks, then he said 3 mos, now he says 3-6 mos. I have noticed NO change in 7 weeks. My primary doc said give it one more month and if no change she would refer me for a 2nd opinion. So we'll see where this goes. There is a turbomed/foot drop facebook group that may be of interest. Again, good luck!

Does your foot seem to drop while walking? Question Dr aboit foot drop. A special brace helps the tripping effect.
The peroneal nerve may be damaged but I would be skeptical about checking out any nerve repair surgeries though. Nerve regeneration takes a loooong time.