Baker's Cyst
A Baker’s cyst, or popliteal cyst, is a pocket of fluid that forms a benign lump behind the knee.
Causes:
- In children, a cyst involves the bursa, a small sac of fluid behind the knee, joining with the sac that cushions the knee bones (synovial sac).
- In adults
- Arthritis
- Knee Injury
Symptoms may include:
- Tightness
- Stiffness
- Swelling that may increase with standing
- Slight pain with bending or straightening knee
Examination may include:
- Medical history
- Physical examination
- Ultrasound
- MRI
Range of treatment:
- Rest
- Ice
- Compression
- Elevation
- Medication
- Aspiration/injection
- Surgery

