OMG, a mirror of myself in your statement, except I do not have arachnoiditis. My problem is stenosis and four back surgeries. Should have never had the first one. Since 2007, severe back pain and only get worse. Been through all your rehabs, nothing, so my latest if the medtronic pain pump (model # 8667-20). I was told it was better than spinal cord stimulator, so now a pump that is not offering much relief. Dr. Pain has morphine as the ingredient, so next refill will ask if something else will help. Investigate Medtronic before implanting this hockey puck..