caa a22 4500 605460760 CHVBK 20210128100240.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00167-014-3106-2 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3106-2 Roentgen stereophotogrammetric analysis: an effective tool to predict implant survival after an all-poly unicompartmental knee arthroplasty—a 10year follow-up study [Elektronische Daten] [Danilo Bruni, Laura Bragonzoni, Michele Gagliardi, Marco Bontempi, Ibrahim Akkawi, Giovanni Raspugli, Francesco Iacono, Silvio Patella, Maurilio Marcacci] Purpose: The main purpose of the present study was to determine long-term implant fixation of 15 unicompartmental knee arthroplasty (UKAs) with an all-poly tibial component using Roentgen stereophotogrammetric analysis (RSA) at a mean 10-year follow-up. The secondary purpose was to investigate whether the progressive loss of implant's fixation correlates with a reduction in Knee society score (KSS). Methods: Fifteen non-consecutive patients with primary knee osteoarthritis received a UKA with an all-poly tibial component were assessed using KSS scores pre-operatively and post-operatively and RSA on day 2 after surgery, then at 3, 6, and 12months and yearly thereafter. The mean last follow-up was 10years. Results: An increase in maximum total point motion (MTPM) values from 6months to 1year post-operatively was found respect to post-operative reference. Implants' displacement values were always <2mm during the first 6months, and then, two different trends were noticed in revised and non-revised implants. MTPM increase between 1 and 2years of follow-up in non-revised UKAs was always <0.2mm, whereas it was >0.2mm in revised UKAs. A linear and negative correlation with statistical significance was found between MTPM and both clinical and functional KSS scores (p<0.001). Conclusion: Also in a long-term follow-up evaluation, RSA is an effective tool to predict functional results after an all-poly UKA providing also a relevant predictive value at 1year follow-up, and this can be very useful for both patients and surgeons. Level of evidence: Diagnostic studies, Level III. Springer-Verlag Berlin Heidelberg, 2014 All-poly tibial component unicompartmental knee arthroplasty nationallicence Roentgen stereophotogrammetric analysis nationallicence Implant fixation nationallicence Maximum total point motion nationallicence Bruni Danilo Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut Bragonzoni Laura Dipartimento di Scienze Biomediche e Neuromotorie (DIBINEM), Univeristà di Bologna, Bologna, Italy aut Gagliardi Michele Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut Bontempi Marco Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut Akkawi Ibrahim Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut Raspugli Giovanni Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut Iacono Francesco Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut Patella Silvio Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut Marcacci Maurilio Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3273-3280 0942-2056 23:11<3273 2015 23 167 https://doi.org/10.1007/s00167-014-3106-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3106-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bruni Danilo Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Bragonzoni Laura Dipartimento di Scienze Biomediche e Neuromotorie (DIBINEM), Univeristà di Bologna, Bologna, Italy aut NATIONALLICENCE 700 1- Gagliardi Michele Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Bontempi Marco Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Akkawi Ibrahim Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Raspugli Giovanni Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Iacono Francesco Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Patella Silvio Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Marcacci Maurilio Biomechanics and Technological Innovation Laboratory, Codivilla-Putti Research Center, Rizzoli Orthopaedic Institute, Bologna University, Via Di Barbiano 1-10, 40136, Bologna, Italy aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3273-3280 0942-2056 23:11<3273 2015 23 167