Broken bones last forever in the real world, the damage is visible on an X-ray after healing and you will suffer in a cold climate.
Organ damage lasts forever in the real world.
Kaido's bigger Oden scar has not hampered Kaido in any way, Luffy's bigger Akainu scar has not reduced his fighting capabilities at all, it is cosmetic.
IRL A superficial scar across your chest would be less impactful than being on dialysis due to Kidney damage for the rest of your life.