According to a recent study by the Malaysian Elders Longitudinal Research (MELoR), almost one in three older adults has symptoms of knee osteoarthritis. This is one of the most common conditions leading to the need for knee replacement surgery. Dato' Dr Siva Kumar Ariaretnam, Consultant Orthopaedic Surgeon from Subang Jaya Medical Centre, talks about how knee and hip replacement surgical methods have advanced today to reduce pain and improve recovery.