The first time that I saw hyaluronic acid used was in the operating room watching my first cataract surgery. The hyaluronic acid is VERY bio-compatible and actually greatly improved cataract surgery outcomes by providing an insulative barrier from cellular surfaces. Allopathic orthopedic physicians are finding it very effective for osteoarthritis of the knee. A series of 5 injections are usually required. For more infomation go to the link below.
Dietary manipulation is often helpful as hidden food allergens often contribute to inflammation.
Finally if there is too much joint damage you should consider replacement surgery. Thanks, RocketHealer Jim. I have yet to see anything that indicates that shark cartilege would help arthritis either. There IS quackery out there. Although that made sense to me at the time, I did not look up the chemical formulae.