Knee osteoarthritis affects about 4.3 million people in the United States, and nearly 400,000 knee replacements are performed each year. It’s been suggested that exercises performed before surgery help improve a patient’s recovery after surgery; this is known as “prehab,” or pre-surgical rehabilitation exercise. Researchers at the University of Louisville recently determined that prehab is effective at improving function both before and after total knee replacement surgery. Their prehab exercise program using Thera-Band resistance bands were featured in a new article published in Functional U, published by the International Council on Active Aging. Topp R, et al. 2009. Improve function before knee replacement surgery. Functional U. 7(2):1-8.