Pes Anserine Bursitis
A bursa is a sac of fluid that helps tendons slide. The pes anserine is an area of
the knee where three hamstring tendons attach. Bursitis is inflammation of the bursa tissue.
Causes & Symptoms
Bursitis often develops as the result of overuse or constant friction. Causes of pes
anserine burisits include hamstring tightness, excessive hill running, obesity, osteoarthritis,
and meniscal tears. Typical symptoms include pain and tenderness on the inside of the knee 2 to
3 inches below the joint. Pain may also be felt at this location with exercise or climbing stairs.
Evaluation & Treatment
Initial evaluation includes a medical history, physical examination, and x-rays to rule out
associated conditions including stress fracture. Treatment includes rest, cross-training, ice,
anti-inflammatory medications, and occasionally corticosteroid injection.