Background: Patients who do not return for follow-up after total knee arthroplasty are often assumed to have had a worse outcome. We postulated that the Internet may be useful for locating patients who do not return for follow-up. The purpose of this study was to compare outcomes between patients who attended prescribed postoperative appointments and those who did not.

Methods: We retrospectively reviewed the outcomes for 161 patients (200 knees) at a minimum of five years after a total knee replacement. All patients who had had no contact of any type with their surgeon in any manner beyond six months following the date of the surgery were classified as not having returned for follow-up. When patients could not be located with use of all available information in their chart, a standardized Internet search algorithm was employed with use of readily available and free search engines.

Results: Thirty patients with thirty-five treated knees met the definition of not returning for follow-up. Thirteen patients could not be located with use of the contact information given at their last visit. All were located with use of the Internet. None of the patients had had knee surgery elsewhere. The reasons for not adhering to the prescribed postoperative regimen were identified. The group had improved Knee Society pain and function scores compared with the preoperative values, and the patients were not significantly different from those who did return for follow-up.

Conclusions: The patients who did not attend follow-up appointments in this series had not had any additional surgery and did not have any significant differences in measured outcome variables when compared with patients who had complied with a follow-up protocol. The Internet proved to be a valuable tool for locating patients who had not returned for follow-up postoperatively.