I'm facing this right now - I crashed the bike almost two weeks ago, and, besides donating a lot of skin off my right knee, hyperextended my left thumb. I thought I could live with it and let it heal on its own, but my wife insisted I go for an assessment. X-rays showed that the ligament, rather than breaking, had pulled a small chunk of bone off. Had surgery a week ago, and have three more weeks in the cast. Going a bit antsy - besides wanting to do pre-winter maintenance on our Mazda 5, we're still hoping to buy a 2nd vehicle, a larger minivan. We've put that on hold, as I can't do a proper inspection one-handed. Nor can I drive our car, which has a manual transmission. I can't hold the wheel with my left hand while shifting with my right. I also can't ride my bike right now, so am doing lots of walking. I'm strongly left-handed, so mechanical work is out for now too.
But the mechanical work is moot because our street has been torn up for construction for almost two months now, with a week or two still to go.