Inferior gluteal nerve damage how treated?

Depends on symptoms: Is it from a posterior approach hip replacement? Physical therapy for strengthening accessory muscles to support hip flexion and make up for glut max weakness and gait training is beneficial. The change in gait can lead to a back pain later on. If pain is your main issue, you may want to consider neuromodulator medication like Gabapentin or Pregabalin to help decrease the pain. I hope this helps!