Most people know about a grip related repetitive stress problem called carpal tunnel syndrome. This involves pinching a nerve in the wrist. And of course there's arthritis of the joints. But there's another problem that arises when the connective tubes or tendons at the base of the fingers gets inflamed. It sounds like something cold war spies used to get. I got my "trigger finger" (of the thumb) from the mundane, repetitive, meditative activity of pruning thousands of grapevine stems.
Let's hope the shot of cortisone and the splint and some time off for winter do the trick. I have to get back and get the fruit trees pruned before bud break.