a fluctuant swelling in the popliteal fossa that sometimes occurs in patients with arthritis of the knee
a hernia of the lining of the joint space caused by chronically increased pressure in the joint space
a misnomer since it is only a collection of the leaked fluid (from the tear in the joint capsule) into the tissue spaces at that site
an abnormal collection of fluid within one of these bursae
an abnormal collection of joint fluid inside a sac that is located behind the knee
an accumulation of joint fluid that builds up behind the knee
a pouch of joint fluid that collects behind the bend of the knee
a small growth, typically behind the knee cap
a small (sometimes large) sack of fluid behind the knee
a soft, behind-the-knee bulge that is actually a swollen bursa
a swelling of the posterior knee capsule
a swollen area behind your knee
a swollen area in the back of your knee