About 7 years ago, I locked the outer meniscus of my right knee while putting on my goalie gear for a game. I undressed, helped someone else dress, walked out my car, drove about 20km to the hospital, and walked into the emergency room. With a locked knee joint. The ER doctor prescribed 300 t3's, and sent me home without crutches, so I drove to a second-hand store to buy some the next morning, then drove to my family doctor's office.
The way the injury was described was that part of my knee joint had worn a hole into a chunk of surrounding cartilage (due to repetitive stress) and eventually got stuck there, so I essentially dislocated part of my knee, and had the dislocated part wedged behind something else, preventing a normal re-location of the joint.
I also got a 2nd degree covering the entirety of my left forearm about 6 years ago, continued working all day, had the blister torn open by a random drunk that night, and almost got arrested for the ensuing beating I hung on him. I went to work the next day looking like a crash victim, and without having gone to bed.
About 2 years ago, a coworker dropped a chunk of old roofing debris that was still partially attached to the roof we were replacing, and I'd put my safety-booted foot under the edge of the piece while he re-positioned his spade, and part of the roof structure below fell away. The board I had my foot under had a 3" wood screw through it, which drove through my big toe, less than 1/8" from the second joint; I pulled the board up, which removed the screw, and then calmly told the foreman I was going to get some gauze and tape, and finished my day.