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Patellofemoral complications following total knee arthroplasty: Correlation with implant design and patient risk factors
Affiliation:1. University of Alabama School of Medicine, 670 University Blvd, Birmingham, AL 35233, USA;2. Department of Orthopedic Surgery, University of Alabama School of Medicine, 1313 13th Street South, Birmingham, AL 35294, USA;3. Department of Orthopedic Surgery, Indraprastha Apollo Hospital, New Delhi, India;1. Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MA;2. Orthopaedic Institute at St. Joseph''s Medical Center, Towson Orthopaedic Associates, Towson, MA;1. Department of Orthopaedic Surgery; Indiana University School of Medicine, Indianapolis, Indiana;2. Indiana University Health Hip & Knee Center, IU Health Saxony Hospital, Fishers, Indiana;3. Department of Mechanical & Aerospace Engineering, University of Florida, Gainesville, Florida;1. Department of Orthopaedic Surgery, Lenox Hill Hospital, 130 East 77th Street, 11th Floor Black Hall, New York, NY 10075, USA;2. Zucker School of Medicine at Hofstra, 500 Hofstra Blvd, Hempstead, NY 11549, USA;3. Northwell Orthopaedic Institute, 130 East 77th Street, Black Hall, 7th Floor, New York, NY 10075, USA
Abstract:Results of 211 total knee arthroplasty operations were retrospectively evaluated to identify patients with knees at greatest risk for the development of patellofemoral complications and to determine the incidence and type of patellofemoral complications associated with different patellar implants. Patellofemoral complications occurred in 27 knees (12.8%). Osteoarthritis and obesity were associated with an increased incidence of patellofemoral problems. Significantly higher rates of patellofemoral complications were noted with metal-backed patellar implants and with patellar components implanted without cement. The loosening rate with cementless fixation was 13.5%. The lowest rate of patellofemoral complications following total knee arthroplasty was obtained with all-polyethylene domed patellar components implanted with cement.
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