A study has found that surgery to relieve knee pain caused by arthritis is no better than more conservative treatments.

In the study, published on Thursday September 11th 2008 in The New England Journal of Medicine, 86 patients who had the operation fared no better over two years than 86 who had physical therapy and took medications to dampen inflammation.

A Study Revives a Debate on Arthritis Knee Surgery - NYTimes.com