I had a microdiscectomy / bilateral laminectomy on my L5/S1 on 12/27/2013. It was primarily for lower back pain caused by a herniation on the left side - 7/4/2013 - though the right side had herniated in 2010 (pain was intense when it happened on the right side but went away within a month).
Recently, around 20 weeks post-op, I started feeling pain in my left buttock on the 3rd day of taking an oral steroid pack (was having pain in my left shin and top of foot since the surgery and thought it may be due to inflammation - had MRI and nerve conduction study done which showed nothing and surgeon wanted to proceed with a selective nerve root block on the L5 nerve root and I asked if I could try an oral steroid pack first since the epidural steroid injection I got before the surgery made my pain worse).
I got another MRI since it felt much like a herniation but there was no indication that I reherniated. There is scar tissue, but both the orthopedic surgeon that did the surgery and a second opinion from a neurosurgeon didn't seem to think there is significant compression caused by it. Within the past week, I've started feeling almost consistent numbness and tingling in my toes and feet and occasionally in my calf, all on left side. The pain in my left butt is almost as bad as the pain the disc herniation was causing on the left side.
Was wondering if it's possible that scar tissue is still forming - it's 26 weeks now.