Popliteal cyst

• Popliteal cyst, also called a Baker cyst, is a cyst in the popliteal fossa, between the semimembranosus and gastrocnemius
  • The cyst consists of a gel-like material
  • The cyst communicates with the synovium of the knee, so it’s not a true cyst
• Etiology
  • It forms on the basis of a chronic inflammation of the knee
  • Osteoarthritis
  • Meniscus injury
  • Rheumatoid arthritis
• Clinical features
  • Often asymptomatic
  • Pain
  • Locking and clicking during movement
• Diagnosis
  • MRI
    • To look for meniscal problem
  • X-ray
    • Osteoarthritis
• Treatment
  • Treat underlying conditions
  • Surgical removal if there are complaints