They’re collectively called the pes anserinus. If the bursa becomes overused or irritated, it can produce extra fluid that causes swelling and pressure on your knee. This inflammation is known ...

Q: I was experiencing pain behind my knee (toward the inside) while training for a marathon and was told it was Pes Anserine Bursitis. I was given a cortisone shot, the pain disappeared ...

Harold Fireman makes a good point regarding pes anserine bursitis in his letter concerning our article.1 We see this condition in hurdlers, steeplechasers and people who run downhill. If it persists ...

So why does the sartorius muscle often cause problems in runners? We break down what you need to know to run ache-free.