naa a22 4500 510760643 CHVBK 20180411083138.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11420-013-9336-x doi (NATIONALLICENCE)springer-10.1007/s11420-013-9336-x MRI After Patellofemoral Replacement: the Component-Bone Interface and Rotational Alignment [Elektronische Daten] [Thomas Heyse, Jens Figiel, Ulrike Hähnlein, Nina Timmesfeld, Markus Schofer, Susanne Fuchs-Winkelmann, Turgay Efe] Background: In an earlier paper, it was shown that tailored magnetic resonance imaging (MRI) allows for reproducible analysis of the preserved knee joint structures after patellofemoral replacement (PFR). Purposes: This pilot study investigates to what degree MRI could produce reliable assessment of the implant-bone interface of femoral and patellar components and rotational alignment following PFR. Methods: MRI tailored for reduction of metallic artefacts was performed in seven patients who had undergone PFR. Two independent investigators evaluated the implant-bone interface at femoral and patellar components and the rotational alignment of the femoral component. They also assessed their degree of confidence in evaluation using a five-point scale. The inter-observer reliability was determined. Results: Implant-induced MRI artefact was barely observed and there was no interference with component-bone interface evaluation. There was excellent inter-observer reliability, inter-observer agreement, and confidence for the implant-bone interface at femoral and patellar components and for rotational alignment. The applied score for the interface was found to be reliable. Conclusion: Tailored MRI allows reproducible analysis of the implant-bone interface and of rotational alignment of the femoral component in patients who have had PFR. It might prove helpful in the assessment of painful PFR. Hospital for Special Surgery, 2013 PFR nationallicence PFJ nationallicence MRI nationallicence knee nationallicence patellofemoral replacement nationallicence component-bone interface nationallicence Heyse Thomas Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut Figiel Jens Department of Radiology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut Hähnlein Ulrike Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut Timmesfeld Nina Institute for Medical Biometry and Epidemiology, Bunsenstrasse 3, 35037, Marburg, Germany aut Schofer Markus Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut Fuchs-Winkelmann Susanne Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut Efe Turgay Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut HSS Journal ® Springer US; http://www.springer-ny.com 9/2(2013-07-01), 108-112 1556-3316 9:2<108 2013 9 11420 https://doi.org/10.1007/s11420-013-9336-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11420-013-9336-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Heyse Thomas Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut NATIONALLICENCE 700 1- Figiel Jens Department of Radiology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut NATIONALLICENCE 700 1- Hähnlein Ulrike Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut NATIONALLICENCE 700 1- Timmesfeld Nina Institute for Medical Biometry and Epidemiology, Bunsenstrasse 3, 35037, Marburg, Germany aut NATIONALLICENCE 700 1- Schofer Markus Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut NATIONALLICENCE 700 1- Fuchs-Winkelmann Susanne Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut NATIONALLICENCE 700 1- Efe Turgay Department of Orthopedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043, Marburg, Germany aut NATIONALLICENCE 773 0- HSS Journal ® Springer US; http://www.springer-ny.com 9/2(2013-07-01), 108-112 1556-3316 9:2<108 2013 9 11420 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer