I had the McGahee injury in '93 - tore my knee to shreds in a football game on an illegal block. Unfortunately, my local small town doctors told me it was a sprain, and although I had to sit out the rest of the football season, told me I'd be OK for basketball.
About 35 minutes into our first practice of the year, while diagraming a fastbreak drill with the entire Varsity watching, I did a jumpstop - my knee bent about 90 degrees sideways, then I fell forward on it, hyperextending it.
Two of my teammates puked on the endline.
Torn ACL and MCL - 90% of my meniscus was shredded from the bones.
Doing squats is still a bitch, and I've got to go and get my knee scoped again this spring.
I freaked out when I saw McGahee's knee get destroyed.
I also saw a kid on the JV get his forearm broke after getting hit right on our sideline - you could hear it crunch, and when he got up, his arm from the middle of the forearm down was just hanging crooked - that was pretty sick.
Bone injuries are sometimes the most shocking, because you can get good pictures, but joint injuries really make my stomach turn.