Pes anserine bursitis


Muscles of the gluteal and posterior femoral regions. Area of pes anserinus (circled); sartorius, gracilis, semitendinosus and semimembranosus are labeled (bottom).
  • Name comes from proximity to the pes anserine (three tendons that insert on the tibia)
  • Inflammatory condition of the medial knee

Risk Factors

  • Osteoarthritis of knee
  • Obese females
  • History of athletic activity (overuse)
    • e.g. runners

Tendinopathy Types

Clinical Features

  • Anterior medial knee pain, frequently chronic (insertion of pes anserine)
  • Worse with ascending stairs and when arising from a seated position
  • Focal swelling occasionally noted over the bursa
  • TTP over the bursa

Differential Diagnosis

Knee diagnoses

Acute knee injury



  • Consider knee x-rays to rule out fracture


  • RICE
  • Physical Therapy
  • Intrabursal injection with local anesthetics and/or corticosteroids (second line treatment)
    • 3-5 mL of 1% lidocaine with or without methylprednisolone into point of maximal tenderness in bursa
    • Do not inject actual tendons themselves.


  • Home
  • Admit for IV antibiotics if infected bursa is suspected
  • Follow up with primary care provider +/- Physical Therapy

See Also