Glucosamine for Osteoarthritis - Bogus or Cure?

Figure 1.  A view of the chemical structure of glucosamine2.
Figure 2.  Structure of Glycosaminoglycans (a) A schematic figure of cartilage, where the fine hair-like branches are glycosaminoglycans, which are made up in part by Glucosamine18.
Figure 3.  Osteoarthritis of the right hip. Osteoarthritic changes of the right hip shown on x-ray include loss of joint space, sclerosis and osteophytes.
Figure 4.  Osteoarthritis of the hand. Radiologic features of advanced osteoarthritis of the fingers.