Medial Unicompartmental Knee Arthroplasty
Richardson, A.B.; Morris, M.J.
Instructional Course Lectures 66: 201-209
2017
ISSN/ISBN: 0065-6895 PMID: 28594499 Document Number: 694779
Unicompartmental knee arthroplasty (UKA) has substantial benefits, including lower perioperative morbidity and earlier recovery, compared with total knee arthroplasty. The traditionally strict indications for UKA have been challenged by studies that expanded the indications based on a diagnosis of anteromedial osteoarthritis of the knee and demonstrated successful outcomes. The Nuffield criteria no longer prohibit patients from UKA based on age, obesity, anterior knee pain, or involvement of the patellofemoral joint. UKA implant designs have evolved substantially in the past three decades, and both fixed- and mobile-bearing UKA implants are currently available. Both fixed- and mobile-bearing UKA implants demonstrate excellent clinical outcomes at more than 10 years postoperatively but continue to have different modes of long-term implant failure. Proper patient selection and execution of surgical technique are critical to optimize patient outcomes.