I know every injury is different, but I tore my ACL not too long ago. I tore mine in September and did not have surgery till Jan 3rd. After the swelling went down in september...i had very little pain and was able to walk around, but i didnt play any sports or anything like that. If your doctor sees this scenario for you, then id reccomend stickin with LS. Remember that you can get a handicap pass and that makes things much better. Healing time was not terrible after surgery...i had it jan 3rd and i was walking without crutches about two weeks after that.
Again, I realize every injury is different, but mine was a fairly severe tear and I did not consider the entire process tough enough to where I would defer law school if this happened to me again.
Best of luck..