What is Pes Anserine Bursitis/Tendinitis?

Bursae play a crucial role in reducing friction and cushioning the movement between bones, tendons, and muscles surrounding various joints. One such bursa, the Pes Anserine Bursa, resides between the tibia (shin bone) and three muscles: the Gracilis, Sartorius, and Semitendinosus muscles. These muscles converge to form the pes anserine tendon, which sits above the medial collateral ligament of the knee joint.

Pes anserine bursitis arises when this bursa becomes inflamed, typically due to repetitive trauma from activities that involve repetitive knee flexion and extension, such as running, walking, and cycling. However, several other factors can predispose individuals to develop pes anserine bursitis, including leg length deficiency, muscle imbalances, and underlying conditions such as osteoarthritis, rheumatoid arthritis, or calcium deposition disorders. Additionally, individuals with genu valgum (knocked knees) or pes planus (flat feet) are at an increased risk of developing pes anserine bursitis due to altered biomechanics and increased stress on the medial aspect of the knee joint.

Pes anserine bursitis typically presents as pain and swelling on the inside of the knee, often radiating down the inner aspect of the shin. Patients may experience increased pain and discomfort with prolonged walking, climbing stairs, or engaging in activities that involve repetitive knee movements such as jogging, cycling, or distance running. The pain may worsen with activities that require repeated knee flexion and extension, exacerbating the inflammation of the bursa.

Overall, timely recognition and appropriate management of pes anserine bursitis are essential to alleviate symptoms, restore function, and improve the quality of life for affected individuals. By addressing both the inflammatory process and underlying contributing factors, healthcare professionals can optimise outcomes and facilitate the return to pain-free activity.

Does this sound like a condition you are suffering from? We offer services that can aid in your recovery!

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Rennie, W.J. and Saifuddin, A., 2005. Pes anserine bursitis: incidence in symptomatic knees and clinical presentation. Skeletal radiology, 34, pp.395-398.

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