Anserine Tendinobursitis Syndrome

(Goosefoot Bursitis; Pes Anserine Bursitis; Anserine Tendonitis)


Anserine tendinobursitis syndrome is a pain to the inner part of the leg, just below the knee joint. It is at a location where three tendons meet and connect to bone. The muscles include the sartorius, gracilis, and semitendinosus. There are also one or more bursae at this location. A bursa is a fluid-filled sac that decreases friction between bones and muscles. When bursae become inflamed it is called bursitis . When tendons become inflamed it is called tendonitis . For this pain syndrome, the exact cause is unknown, but it may involve injury or inflammation to the tendons or bursae.
Tendons Meet and Connect to Bone
medial knee muscle insertion
Copyright © Nucleus Medical Media, Inc.
This may be a treatable condition. Contact your doctor if you think you may have this syndrome.


This condition is most commonly caused by repeated stress to the knee. A direct injury to the knee can also cause this condition

Risk Factors

Factors that may increase your chance of anserine tendinobursitis syndrome include:
  • You are a runner
  • Osteoarthritis
  • Tear to meniscus
  • Obesity
  • Change in running routine
    • More miles
    • Sudden increase in workout
  • Tight hamstrings
  • Flat feet
  • Genu valgum—knees touching
  • Feet that roll inwards (overpronation)
  • Diabetes


Anserine tendinobursitis syndrome may cause:
  • Pain to inside part of knee
  • Knee tenderness
  • Swelling
  • Pain worsens with bending and straightening of knee
  • Pain worsens with exercise

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