Kyushu University Dec 1 2025 Total hip arthroplasty (hip replacement) is a common treatment for hip osteoarthritis, a degenerative joint disease caused by cartilage in the hip joint wearing down. However, clinical outcomes vary between patients, and the best timing for surgery remains unclear. Now, researchers at Kyushu University have identified that pre-surgery walking speed is a strong predictor of post-surgery outcomes. In a study published on 26 November in The Journal of Bone and Joint