Women with arthritis may want to reconsider wearing high heels. Researchers at Boston’s Spaulding Rehabilitation Hospital found that the movements of women who frequently wear high heels of at least two inches high (including thick heels) increases torque (twisting force) at the knee, straining the joint near the back of the kneecap. This stress can increase wear and tear and lead to, or worsen osteoarthritis.
(Source: Nelson, et. al. Strong Women and Men Beat Arthritis. G.P Putnam’s Sons. New York: 2002)