Weight loss may reduce the symptoms of knee osteoarthritis.

Australian researchers have reported that weight loss can result in improved knee cartilidge structure and reduced loss of thickness. This study involved 111 obese patients who lost an average of 20.3 pounds in a years time. Weight loss of as little as 7% of body weight preserved cartilage quality, which in turn improved range of motion. These findings suggest that by losing weight, individuals may improve knee health, and possibily prevent the need of total knee replacement.

PositiveTip: Sore knees? Perhaps losing a few pounds would enhance your mobility and quality of life. 

Glucosamine, chondroitin and the combination are no better than a placebo for joint pain.

A meta-analysis of 10 randomized controlled trials of glucosamine and chondroitin alone or in combination and placebo has found these products give no benefit over the placebo for the relief of hip or knee pain. Six of these trials also found they had no effect on joint-space narrowing.

PositiveTip: While apparently safe, strong evidence suggests taking glucosamine and chondroitin supplements is a waste of hard earned money.

Unequal leg length may be a risk factor for osteoarthritis of the knee.

A 30-month prospective study of nearly 3000 adults has discovered that even less than 1/4 inch of difference in leg length nearly doubled the risk of osteoarthritis. It is estimated that up to 70% of the population have one leg shorter than the other. This study strengthens the evidence that unequal leg length is a cause of osteoarthritis and its progression. For people with very small leg length differences, corrective treatment with shoe inserts or modifications may be helpful.

PositiveTip: If you suspect your are at risk for osteoarthritis of the knee, you might benefit from talking to your health care provider.