Baker cyst
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Baker cyst
Musculoskeletal system
Compartment syndrome
Degenerative diseases
Infectious diseases
Lower extremity disorders
Baker cyst
Bursitis
Developmental dysplasia of the hip
Legg-Calve-Perthes disease
Osgood-Schlatter disease (traction apophysitis)
Slipped capital femoral epiphysis
Transient synovitis
Achilles tendon rupture
Anterior cruciate ligament injury
Iliotibial band syndrome
Meniscus tear
Patellar tendon rupture
Patellofemoral pain syndrome
Sprained ankle
Unhappy triad
Rheumatologic disorders
Calcium pyrophosphate deposition disease (pseudogout)
Fibromyalgia
Gout
Juvenile idiopathic arthritis
Limited systemic sclerosis (CREST syndrome)
Mixed connective tissue disease
Osteoporosis
Polymyalgia rheumatica
Psoriatic arthritis
Raynaud phenomenon
Reactive arthritis
Rheumatoid arthritis
Scleroderma
Sjogren syndrome
Systemic lupus erythematosus
Spinal disorders
Upper extremity disorders
Musculoskeletal system pathology review
Back pain: Pathology review
Bone disorders: Pathology review
Bone tumors: Pathology review
Gout and pseudogout: Pathology review
Muscular dystrophies and mitochondrial myopathies: Pathology review
Myalgias and myositis: Pathology review
Pediatric musculoskeletal disorders: Pathology review
Rheumatoid arthritis and osteoarthritis: Pathology review
Scleroderma: Pathology review
Seronegative and septic arthritis: Pathology review
Sjogren syndrome: Pathology review
Systemic lupus erythematosus (SLE): Pathology review
Key Takeaways
A Baker cyst, also called a popliteal cyst, is a fluid-filled sac that forms behind the knee. It's caused by a buildup of fluid in the joint space between the femur and tibia (the bones of the leg), and is most often seen in people with joint degenerative diseases such as arthritis.
Symptoms of a Baker cyst can include pain, swelling, and stiffness behind the knee. In some cases, the cyst may rupture and release its contents into the surrounding tissues, causing more pain and swelling.