has attained great popularity as a nutritional supplement, primarily for osteoarthritis
. The limited in vivo studies that have been done suggest that very little glucosamine taken orally actually gets into the joint. This raises the possibility of a placebo effect but does not rule out mechanisms of action at a level as yet unknown.
Since the role of glucosamine is very controversial ,I would never rely on this product specially in the situation where the patient is a fit case of knee transplant.
Had I been your doctor,I would have asked you to go for knee transplant as three months is a long time and a seemingly fit case for surgery can be rendered unfit because of any unforeseen circumstances.