Wrist/elbow injury: OR, TheMightyMcClaw gets old
About six years ago, I received my first injury; some at BJJ hyperextended by left arm with an armbar. Not too badly, but it did make some noise. It has since been compounded with some cranked-on wristlocks.
Now, I think I'm starting to feel it. I work with metal for a living, and I cannot help but notice that I get severe cramps in my left shoulder/wrist/elbow/entire arm way before my right. I initially attributed to this to some kind of martial arts-derived muscular imbalance, but I'm more and more suspecting those old injuries may be playing a hand. I've also noticed that if I tape my left wrist before working, said pains do not develop so quickly.
On the bright side, I've now hired out a lot of the grunt labor of my business to subcontractors (aside: I'm pretty sure I've created more manufacturing jobs in Michigan than GM), so the amount of physical labor I personally invest in my business has gone down. That said, If I found myself physically incapable of metalworking in ten years, that would present serious obstacles.
So. What do I do. How do I prevent this situation from worsening further? Any of you old farts have advice for slowing the inevitable march of entropy?