I'm 42 yrs old and have suffered knee pain since 18yrs old. I've had numerous operations on my knees more so to the right knee. I've also had 2 operations on my right shoulder which is now causing me chronic pain I'm also suffering chronic pain in my back. I take morphine patches and tablets, lidocaine patches, amatryptatine tablets, ands gabapentin. I know the pain isn't going to get better so it's a case of dealing with it. I'm thinking my body is getting immune to the drugs now and need to change, but have tried so many. Any advice is welcome. Thanks in advance.