caa a22 4500 605456216 CHVBK 20210128100216.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s00167-014-3127-x doi (NATIONALLICENCE)springer-10.1007/s00167-014-3127-x No differences in clinical outcomes between fixed- and mobile-bearing computer-assisted total knee arthroplasties and no correlations between navigation data and clinical scores [Elektronische Daten] [Carlos Marques, Sandra Daniel, Anusch Sufi-Siavach, Frank Lampe] Purpose: The theoretical advantages of mobile-bearing (MB) designs over the conventional fixed bearings (FBs) for total knee arthroplasty (TKA) have not been proved yet through clinical studies. The aim of the study was to test whether the MB design has advantages in terms of better clinical outcomes when compared to FB. Furthermore, the relationships between intra-operative obtained implant positioning data and the clinical scores were analysed. Methods: A total of 99 patients were randomized into the FB or the MB group. All patients received the same posterior cruciate retaining implants and were operated with the use of a computer-assisted navigation system. The clinical outcomes of both groups were compared pre-operatively, at 1year, and at a mean follow-up time of 4years after surgery. Results: The MB implants showed no advantages over the FB when comparing the Knee Society Scores, the Oxford Score, the range of movement (ROM) and pain intensity of the patients in both groups at 1 and 4years after surgery. There were no relationships between the computer navigation data and the clinical scores. Conclusions: In view of the 4-year results, there is no evidence to support the recommendation of one design over the other in terms of better clinical outcome scores, higher ROM or lower pain rates. Long-term follow-up results may be necessary, including survival rates. Further research comparing different TKA designs should also include standardized performance-based tests. Level of evidence: Prospective study (Randomized controlled trial with adequate statistical power to detect differences), Level I. The Author(s), 2014 Mobile bearing nationallicence Fixed bearing nationallicence Total knee replacement nationallicence Computer-assisted surgery nationallicence Randomized controlled trial nationallicence Marques Carlos Research Center of the Orthopedic and Joint Replacement Department, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany aut Daniel Sandra Orthopedic and Joint Replacement Department, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany aut Sufi-Siavach Anusch Orthopedic and Joint Replacement Department, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany aut Lampe Frank Research Center of the Orthopedic and Joint Replacement Department, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/6(2015-06-01), 1660-1668 0942-2056 23:6<1660 2015 23 167 https://doi.org/10.1007/s00167-014-3127-x 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/s00167-014-3127-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Marques Carlos Research Center of the Orthopedic and Joint Replacement Department, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany aut NATIONALLICENCE 700 1- Daniel Sandra Orthopedic and Joint Replacement Department, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany aut NATIONALLICENCE 700 1- Sufi-Siavach Anusch Orthopedic and Joint Replacement Department, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany aut NATIONALLICENCE 700 1- Lampe Frank Research Center of the Orthopedic and Joint Replacement Department, Schoen Klinik Hamburg Eilbek, Dehnhaide 120, 22081, Hamburg, Germany aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/6(2015-06-01), 1660-1668 0942-2056 23:6<1660 2015 23 167