osteoarthritis

Osteoarthritis

Being 10 pounds overweight increases the force on the knee by 30–60 pounds with each step. Osteoarthritis is the most common joint disorder with symptoms in the knees, hips, back, neck and hands. Being overweight increases the load placed on joints, which in turn increases stress and could possibly hasten the breakdown of cartilage. For example, it is estimated that a force of three to six times one’s body weight is exerted across the knee while walking. Being overweight has also been associated with higher rates of osteoarthritis in the hands, suggesting the involvement of a circulating systemic factor.
Overweight women have nearly 4 times the risk of knee osteoarthritis. For overweight men the risk is 5 times greater. Even small amounts of weight loss reduce the risk of developing knee osteoarthritis. Studies suggest that weight loss decreases pain substantially.
It used to be that joint replacement was not an option for obese patients. Studies have now shown that joint replacement surgery is feasible but the complication rate is higher. Obese patients require significantly longer time in the operating theatre and longer hospital stays. Obese patients also require high dependency care more often than non-obese patients. Because of the additional potential for complications and prolonged recovery, it is recommended that obesity is addressed prior to surgery.