Has your doctor determined the cause of the pain? Is this a case of "bone on bone" or "muscle" related? I had pain both in my knees, hips, and lower back. All three areas of pain turned out to be a result over tight muscles which placed more than normal pressure on these joints and therefore cause the nerve pain. A Physical Therapist resolved all of these issues with simple stretching exercises which loosened the muscular force on these joints. Note that the hip and knee pain was more at the annoying level of pain and something I could live with. However, the lower back pain was so bad I couldn't move at times. It was excruciating. Meds did nothing for this condition.

If you have bone on bone conditions that is another story. I've heard of artificial material being implanted to replace the worn out meniscus. However, I don't hear much about this so I'm not sure of the success rate. A relative of mine just went through the libation of the nerves in her knees and it appears to be working so far. But time will tell. A point to consider though is that a neurologist once told me that libation of a nerve can sometimes end up with more pain so research this before you engage in such a procedure. Good luck.