 Okay, day 12 of our PANTS review. Day 12 out of 30, 30 days in a row, 30 videos in a row of PANTS physician assistant national certifying exam review. This question is going to be, what is gamekeeper's thumb, otherwise known as skier's thumb? I'm gonna repeat that one more time, give you a couple seconds to think of the answer. What is gamekeeper's thumb or skier's thumb? Give you a little hint. It's an injury, it's a type of injury, okay? So what's gamekeeper's thumb? The answer is, it's forced ABduction, abduction, this is abduction, this is abduction, forced ABduction of the thumb, which causes injury to the ulnar collateral ligament, the UCL, ulnar collateral ligament, is torn partially or completely due to forced abduction of the thumb. How can this happen? A multiple different things, usually in sports, so such as it's called skier's thumb because people ski, their ski pole gets stuck in the snow and sure enough, it goes backwards and forcefully ABducts the thumb, causing a tear in this ligament. The reason it's also called gamekeeper's thumb, this is kinda gross, but the reason it's called gamekeeper's thumb is like back in the day, gamekeepers like Hagrid from Harry Potter, one of their primary tasks was to prepare chickens and by prepare chickens, I mean forcefully ripping the heads off of chickens so that you can cook them. So what they actually had to do, the technique that gamekeeper's back in the day used to rip the heads off a chicken, I know gross, is they hold the body or the head and in their other hand, they hold the other part of the chicken and they twist and they push with this motion and they rip the head off the chicken. And if you notice the motion, the chicken's head would be going right against this thumb forcefully, so again, forceful ABduction of the thumb, causing damage to the ulnar collateral ligament. How does it present? Pain and swelling on the ulnar side of the MCP, metacarpophalangeal joint, that's your first joint of your thumb right there, so pain and swelling right in this area. The treatment is going to be a thumb spica, it's basically a device that you wear that prevents your thumb from moving so that you allow the ligament to heal and or if it's completely torn, surgery may be necessary, okay? So one more time, what is gamekeeper's thumb or skier's thumb? It's a injury causing forceful ABduction, of the thumb causing injury to the ulnar collateral ligament and presents with pain and swelling on the ulnar side of the MCP, metacarpophalangeal joint of the thumb.