As many as 700,000 people in the U.S. undergo knee surgery each year to treat tears in a crescent-shaped piece of cartilage known as the meniscus, which acts as a shock absorber between the upper and lower portions of the knee joints. The tears create loose pieces of cartilage that doctors have long thought interfere with motion of the joints,
But researchers in Finland who studied two sets of patients—one that received the surgery, and another that was led to believe that it had—observed no significant differences in improvement between the groups after one year.
Surgery did provide a slight advantage in certain areas early on, including a decrease in pain felt after exercising and in some quality-of-life measures, but the differences disappeared by the end of the 12 months, the researchers said in a paper published Wednesday in the New England Journal of Medicine.
"researchers in Finland" I think octo has a lot of explaining to do.