baker`s cyst. normal knee, and joint with popliteal cyst

anatomy arthritis baker bakers bone bursa bursae cap capsule cartilage cyst disease flow fluid gastrocnemio gastrocnemiosemimembranosus human illustration inflammation inflammatory injury joint knee kneecap leg medical medicine meniscus muscle normal orthopedics osteoarthritis pain paint patella popliteal rheumatoid semimembranosus stiffness surgery surgical swelling synovial tumor vector