Welcome back. Sorry to hear about your injury and unemployment. (Hopefully you're getting some benefits from the gestapo-enforced SDI and/or worker's comp.)
Be glad it's only your hand, though. I grew up around and worked in the construction trade, and saw some nasty injuries with rebar. One guy I know fell into a 6-ft deep footing and took a rebar through his gut - it actually didn't harm any of his internal organs, just slid between his intestines, past his kidney, and out the other side. Another guy I know fell backwards and sat on a 2-ft upright rebar - let's just say it took 'the path of least resistance.'