Fresh on the heels of reports of a study from the Women's Health Initiative, which suggested that long-term hormone replacement therapy leads to increased risks of breast cancer, stroke, and heart attack, comes news of a long-term study, reported in The New England Journal of Medicine, that found that arthroscopic surgery in patients with osteoarthritis delivered no better results than did a placebo procedure.
Appearing at nearly the same time, the two studies seemed to echo each other, casting doubt on long-standing treatments with...