Surgeons tend to consider recovery the time your stitches heal. They might say you’ll be all better in 4 weeks, but the shock to your body might take 2-3-4 months longer until you feel you have your full energy back.
So what happens? Patents complain that even after recovery they are not 100% and blame the Doctor and their care covers. Their false expectations are not met and start looking for someone to blame, or a lawyer.