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
. When tendons become inflamed it is called
. 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
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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
Factors that may increase your chance of anserine tendinobursitis syndrome include: You are a runnerOsteoarthritisTear to meniscusObesity
Change in running routine
More milesSudden increase in workoutTight hamstringsFlat feetGenu valgum—knees touchingFeet that roll inwards (overpronation)Diabetes
Anserine tendinobursitis syndrome may cause: Pain to inside part of kneeKnee tendernessSwellingPain worsens with bending and straightening of kneePain worsens with exercise
Your doctor will ask about your symptoms and medical history. A physical exam will be done. You will be asked to show exactly where you feel the pain. Often diagnosis is made by physical exam alone. Sometimes an
is performed to rule out other injuries.
Talk with your doctor about the best plan for you. Treatment options include the following:
You will be instructed to rest the affected knee until the pain goes away. You may also be advised to ice your knee 3-4 times a day to decrease the inflammation.
You may be referred to physical therapy.
Nonsteroidal antiinflammatory drugs (NSAIDs) help with pain and inflammation. Your doctor will advise you which NSAID to take and how often.
You may also receive a steroid injection directly into your knee to relieve pain and inflammation.
To help reduce your chance of anserine tendinobursitis: When increasing your workout or run, do so graduallyStretch before and after your workoutWear appropriate shoes for the specific activity and your feetFollow your doctors directions to manage any underlying conditions
Alvarez-Nemegyei, Jose MD, et al. Evidence-based soft tissue rheumatology IV: Anserine bursitis.
J Clin Rheumatol. 2004;10(4):205-206.
Calmbach WL, Hutchens M. Evaluation of patients presenting with knee pain: Part II. Differential diagnosis. Am Fam Physician. 2003;68(5):917-922.
Dixit S, Difiori JP, et al. Management of patellofemoral pain syndrome. Am Fam Physician. 2007;75(2):194-202.
Pes anserine (knee tendon) bursitis. American Academy of Orthopaedic Surgeons Ortho info website. Available at:
http://orthoinfo.aaos.org/topic.cfm?topic=A00335. Updated March 2014. Accessed December 17, 2014.
Uson J, Aguado P, et al. Pes anserinus tendino-bursitis: what are we talking about?
Scand J Rheumatol. 2000;29(3):184-186.
Last reviewed December 2014 by Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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