G'day, my name's Fergus. I'm a Sports Physiotherapist. This is some clinical tests that I use to diagnose injuries in my patients.
Alright, this is Phil. He's come in today with a sore left knee. I just want to show you the Swipe Test, which is a test we use to demonstrate an effusion, or swelling inside the knee joint - inside the capsule. The knee is a synovial joint, that means it's inside a capsule filled with synovial fluid, which is a lubricant to help the knee move and keep the cartilage surfaces healthy.
Phil's knee looks OK. He's got some medial joint-line pain. He's got some tightness and some tenderness through the back of the knee. We use the swipe test to see if there's an effusion, or swelling inside the knee joint or not.
So we swipe up the medial side of the knee, hold up the top, and then swipe down the lateral side of the knee. And we're looking for that little "puff" of swelling to re-accumulate there. So we're milking the swelling out of that medial compartment and then we watch it re-accumulate with a swipe down the lateral side.
We grade that zero, one, two, or three. Zero's no effusion. Phil's got a grade one. A grade two is a large effusion - a large bulge. And a grade three is one that we can't even milk out.
So that's the swipe test to demonstrate an effusion in the knee.