The North American Knee Arthroplasty Knee Revision (NAKAR) Study Group: Effectiveness and Efficiency of Revision Knee Replacement

This research study aims to assess function before and after revision total knee replacement surgery. The purpose of this study is to measure progress after surgery so that the surgical methods used during revision total knee replacement can be scientifically evaluated.

Specifically, the objective of this study is to evaluate revision knee replacement surgery outcomes by comparing preoperative with 3 month, 6 month, 12 month and 24 month outcome instruments and monitoring surgeon preoperative, intraoperative and postoperative clinical and radiographic observations. Scientifically rigorous methods will insure that we can learn which revision techniques are the most successful for any given knee replacement revision surgical dilemma and provide a measuring stick for the reporting of all future total knee replacement revision outcome studies.

Participation in this study will not involve any experimental or additional procedures nor will there be any experimental devices implanted.

This study of 100 patients is being conducted at several teaching hospitals which include: Columbia University Medical Center, New York, NY; University of Iowa Hospitals, Iowa City, IA; Lahey Clinic, Burlington, MA; University of Minnesota, Minneapolis, MN; and Tulane University Hospital and Clinic, New Orleans, LA.