A Patient's Guide to Pes Anserine (Goosefoot) Bursitis Bursitis
of the knee occurs when constant friction on the bursa causes
inflammation. The bursa is a small sac that cushions the bone
from tendons that rub over the bone. Bursae can also protect
other tendons as tissues glide over one another. Bursae can
become inflamed and irritated causing pain and tenderness. This
guide will help you understand - what part of the knee is
affected - what causes this condition - how doctors diagnose
this condition - what treatment options are available What parts
of the body are involved? The pes anserine bursa is the main
area affected by this condition. The pes anserine bursa is a
small lubricating sac between the tibia (shinbone) and the
hamstring muscle. The hamstring muscle is located along the back
of the thigh. There are three tendons of the hamstring: the
semitendinosus, semimembranosus, and the biceps femoris. The
semitendinosus wraps around from the back of the leg to the
front. It inserts into the medial surfac