I have a hellaciously ugly scar, and I can't quite straighten the finger all the way, but the surgeon told me I really had a choice - I could have full range of motion in the opening direction or in the closing direction. I wanted full range of motion to closing because of sewing, typing, etc. I don't go around saluting people and the finger at rest falls into a slight natural curve. The scar has faded substantially (the injury was about 16 years ago) and people don't ever notice it in passing. The secret is aggressive and FAITHFUL PT.
I hyperextended my right knee and tore the ACL falling off when a horse ran out at a fence, I've broken my nose a couple of times, and possibly cracked a rib or two (not very badly - no treatment for it anyway other than time). Other than that, just bumps and bruises and injured pride . . . :-D