It seems like one of the simplest and most cost effective ways to conduct post-market surveillance would be to request feedback from the patients using the device. For example, if the device is a knee replacement, it would be in the best interest of the company to request the feedback of the doctor/surgeon applying the device for any issues that they may have run into as far as packaging, sterilization, and product integrity. Concerning the long term use of the knee replacement itself, it would be best to follow up and request feedback from the patient to see how satisfied they are with the product and what issues they have run into since having it.