caa a22 4500 605456313 CHVBK 20210128100217.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s00167-014-3479-2 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3479-2 Predictors of flexion using the rotating concave-convex total knee arthroplasty: preoperative range of motion is not the only determinant [Elektronische Daten] [Jean Langlois, Anaïs Charles-Nelson, Sandrine Katsahian, Julien Beldame, Benjamin Lefebvre, Michel Bercovy] Purpose: The range of motion achieved after a total knee arthroplasty (TKA) affects many daily activities and overall patients' satisfaction. This study aims to define the determinants affecting post-operative midterm active flexion according to a specific cruciate-sacrificing prosthesis, the rotating concave-convex (ROCC®) TKA. Method: Four hundred and eighty-four consecutive patients (584 TKAs) were prospectively followed. After baseline patient demographics and anatomical characteristics, clinical and radiological post-operative assessments were periodically recorded. The rotational alignment of the femoral component was additionally reported for 120 patients. Eligibility for final inclusion was a minimum of 5-year follow-up. Univariate analyses followed by a multivariate model were fitted to determine the independent predictors of midterm active knee flexion. Results: Thirty-four TKA (5.8%) were excluded for a secondary surgery before their 50years, 69 patients died (11.8%), and 21 (3.6%) were lost to follow-up. Overall, 460 TKAs were included. The post-operative mean knee flexion angle was measured at 127.7°±9.3°. Significant factors affecting final flexion under univariate analyses were the patient height and body mass index, the absence of previous surgery, a depressive state, the preoperative flexion angle, a preoperative flexion contracture, a patellar residual subluxation, the reconstructed patellar height, and the rotation of the femoral component. The multivariate model confirmed the patient's height, a depression, the preoperative flexion angle, a patellar residual subluxation, and the patellar height as statistically significant determinants. Conclusion: Aside from the preoperative flexion angle, numerous predictors of flexion, both patient- and procedure-related were identified. Surgeons should take these into account both when adequately informing their patient before surgery and when performing the arthroplasty itself. Level of evidence: Prognostic, Level II. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA), 2014 Total knee arthroplasty nationallicence Knee flexion nationallicence Range of motion nationallicence Patellar tracking nationallicence Femoral component rotation nationallicence Langlois Jean Service de chirurgie orthopédique et traumatologique, Hôpital Cochin, APHP, Université René Descartes, 27 rue du Faubourg Saint-Jacques, 75679, Paris Cedex 14, France aut Charles-Nelson Anaïs URC Hôpital Européen Georges Pompidou, APHP, Paris, France aut Katsahian Sandrine URC Hôpital Européen Georges Pompidou, APHP, Paris, France aut Beldame Julien Clinique Mégival, Saint Aubin Sur Scie, France aut Lefebvre Benjamin Service de chirurgie orthopédique et traumatologique, CHU Rouen, Rouen, France aut Bercovy Michel Clinique les Fontaines, Melun, France aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/6(2015-06-01), 1734-1740 0942-2056 23:6<1734 2015 23 167 https://doi.org/10.1007/s00167-014-3479-2 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/s00167-014-3479-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Langlois Jean Service de chirurgie orthopédique et traumatologique, Hôpital Cochin, APHP, Université René Descartes, 27 rue du Faubourg Saint-Jacques, 75679, Paris Cedex 14, France aut NATIONALLICENCE 700 1- Charles-Nelson Anaïs URC Hôpital Européen Georges Pompidou, APHP, Paris, France aut NATIONALLICENCE 700 1- Katsahian Sandrine URC Hôpital Européen Georges Pompidou, APHP, Paris, France aut NATIONALLICENCE 700 1- Beldame Julien Clinique Mégival, Saint Aubin Sur Scie, France aut NATIONALLICENCE 700 1- Lefebvre Benjamin Service de chirurgie orthopédique et traumatologique, CHU Rouen, Rouen, France aut NATIONALLICENCE 700 1- Bercovy Michel Clinique les Fontaines, Melun, France aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/6(2015-06-01), 1734-1740 0942-2056 23:6<1734 2015 23 167