Looking for more information for Adhesive arachnoiditis treatment

MRI showed Adhesive Arachnoiditis at my L4L5 . Been having low back into thigh pain for some years after being diagnosed with Ankylosing Spondylitis many years back, so have had back injections thru the years. Seen Neurosurgeon who said I was in mild stages and recommended therapy and electric stimulator implant as treatment options. My question is this the only options or is there something more out there for treatment or I should be doing?