This is magnetic resonance imaging (MRI) of my right knee, performed in October of 2006 after a sports injury that proved to be less severe than expected.

Luckily, no ligaments were torn but, if you look closely, you may see the remnants of the ACL severed (and left unrepaired) ten years prior to this injury.

I was told these images show contusions on the cartilages that cover the heads of the bones.

The white spots seen in the clips in the top row (and the one in the bottom righthand corner) are a mixture of blood and synovial fluids released when the joint capsule ruptured.