Not sure about the airpocket, but I have alot of problems with my right wrist, and there is not much you can do about it except rest. It swells (painfully) everytime I get an infection too (the imune system attacking the joint, the same as arthritis I would imagine). I have trouble with benching, sometimes with squats, with pushups and a bunch of other things, and ocaisonally I have to twist it to snap it back into place. I have morelimitedrange of motion than is normal as well. Just bad joints I guess and I don't know of anything you can do about it.