never spraned a wrist, but have played till my fingers got pretty raw and bled. I remember years ago I was getting ready for a pretty big gig. And stringing and setting up my guitar, poked a string right into the tip of one of my left hand fingers. MAN that hurt like hell and bled pretty good out of such a small puncture wound. By the time the next night rolled around and we were on, my finger was infected a little bit, and sore as hell. Damn that was one of the roughest gigs I have ever had to do. I was almost in tears by the end of it.. My band buddies just laughed at me, all through the set. They would look over at me playing with my teeth clinched, and eye shut most the time, laughing at my arse.. lol.. I felt like choking the hell out of the front guy when he knowing how bad my finger hurt, looks over to me with this satan grin on his face, and introduced the Bassist and egged the audience on to cheer me on to a Bass solo proformance.. I wanted to KILL that SOB for that.. lol..