Permanent implants undergo a special surface treatment process. This coated and thus enhanced surface of artificial joints, teeth, plates, screws, etc. has to be precisely controlled. Because 100 % is mandatory in health care!
The only economically feasible way to implement this today is with industrial image processing - just like the completeness checks for OR consumables such as syringes, instruments, tubing systems, etc. No level of uncertainty is acceptable during operations and emergencies.