As promised, some draft material on the subject of injuries:
How injuries happen
Injuries happen when you have done something wrong. This is obvious enough. The question is what exactly? To begin thinking about this constructively, remember that climbing is about moving a large physical mass, i.e. your body, using relatively small and potentially vulnerable body parts. When climbing is done correctly, you don’t notice this basic truth as it can be masked by strength, good technique, balance, and sometimes plain luck. When the weight of your body is loaded poorly onto vulnerable joints and muscles and tendons, trouble starts.
The causes of this are basically two-fold; bad technique going into the move caused by inadequate training or planning and trying moves that are dangerous regardless of technique.
An example of the former would be attempting to lock off a small crimp at the end of a long day of bouldering. You are tired, under-hydrated, and not moving as cleanly as you could. As you try the move, a poorly-placed foot pops off a small edge, causing you suddenly to load the crimp very hard in an eccentric fashion. At worst, you may actually hear a tendon pulley snap, other times you may feel a slight strain that allows you to continue climbing and unknown to you, actually make a bad situation much worse. If you had backed off and come back when fresher, the move would have been trivial. If the pulley hadn’t snapped but you felt something wrong, had stopped climbing and iced the affected region immediately, you might be up to speed in a week or two. Instead you might have a nagging injury lasting months, even years.
An example of the latter situation is trying a move that isolates a body part in a way that forces a load onto that part that it is not designed to handle. The classic example is a one finger pocket. No matter how strong or careful you may try to be, there is no way to guarantee you will not hurt yourself on that kind of hold. Another is doing a move that involves using a gaston high overhead or making a very long reach sideways. Both these positions involve a considerable risk to your shoulder joint, especially the rotator cuff assembly. Another is latching a hold after a huge feet-cutting dyno. The impact and subsequent swing are potentially very hazardous to shoulders, regardless of strength or technique. These kinds of moves can be anticipated and avoided but occasionally you will want to do a problem that requires their use. Just as in the first case, planning and preparation are vital.
To avoid climbing injuries, the first rule is always warm up well on a sufficient amount of easy to moderate climbing or, if that isn’t accessible, an adequate amount of exercise to get your heart and respiration rate up and your body temperature elevated a bit. The second rule is never try individually hard moves when tired. This applies to training as well as in the field. For safe healthy bouldering you want to operate at your peak in the window between warm-up and fatigue, recognizing when you have peaked and adjusting your activity accordingly. During this window, you want to stay hydrated and fueled as this allows both better performance at the peak period and quicker recovery once you have quit for the day. My advice, despite the stories of heroic sends, 5th day on and on the 20th try, is never climb to exhaustion. You are only teaching yourself to climb poorly when tired, a habit that is not easy to break. It also opens the window to injury on otherwise easy problems and moves, the type of climbing which is in no way worth the sacrifice of a climbing season to achieve.
