Lump Behind Knee

[[old] Bill]

Hello,<br><br>Can remember tweaking something behind my knee when I stood up off the erg a couple of weeks ago.<br><br>Now after 34minute gentle row I have got a big lump behind my knee - slightly sore. Lump goes down after couple of hours - Leg feels slightly tighter than usual when I stretch - hardly any pain.<br><br>Am puzzled about what odd lump might be - any ideas ? <br><br>Wasnt planning to go to Doctor - being a fully paid up card carrying middle aged male it just wouldnt do.<br><br>Bill

[[old] kamdo]

Bill,<br> Sounds like it might be a Baker's cyst. This is similar to a ganglion cyst that many people have over their wrists. Basically, it's a weak spot in the joint capsule that bulges out and backfills with synovial fluid (joint fluid) to form a firm "bulge" behind the knee. To the touch it feels "fluctuant" which is the feeling you get when you touch a water filled balloon. They generally cause stiffness, some limitation in motion, and occasionally moderate to severe pain. Get it checked. You may need a needle aspiration with steroid injection, or possible surgical removal. The wrists ganglions can spontaneously resolve, but the Baker's cysts usually are too big to resorb on their own.<br> Other possibilities in the differential diagnosis would be a popliteal artery aneurysm (pulsatile mass), a muscle herniation, or a tumor, all less likely, but again, see a competent Orthopedic Surgeon for a proper diagnosis.<br><br>Kevin

[[old] Bill]

Kamdo,<br><br>Thankyou - Takes the mystery out of it when other people have had similar things and know what it might be.<br><br><br>Bill