I just answered some questions on this subject so I assume you are the same individual. Meralgia Paresthetica is the aggravation or inflammation of the lateral femoral cutaneous nerve where it exits the pelvis under Poupart’s ligament (where your front hand would be if you put it in your front pants pocket). Spinal fusion requires lying on your belly with pads under the anterior pelvis right where this nerve lives. Prolonged pressure on this area can aggravate this nerve and cause a neuralgia just like when you rest your elbow “funny bone” (ulnar nerve) too long on a counter.
Dr. Corenman