caa a22 4500 60545972X CHVBK 20210128100235.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s00167-014-2849-0 doi (NATIONALLICENCE)springer-10.1007/s00167-014-2849-0 No radiographic difference between patient-specific guiding and conventional Oxford UKA surgery [Elektronische Daten] [Bart Kerens, Martijn Schotanus, Bert Boonen, Nanne Kort] Purpose: Implant position is an important factor in unicompartmental knee arthroplasty (UKA) surgery. Results on conventional UKA alignment are commonly described in literature. Patient-specific guiding (PSG) is a new technique for positioning the Oxford UKA. Our hypothesis is that PSG improves component position without affecting the HKA angle. Methods: This prospective study compares the results of our first thirty cases of cementless Oxford UKA using PSG with thirty cases using conventional outlining. Baseline characteristics for both groups were identical. Details on handling of the guide, estimated blood loss and operation time were recorded. Postoperative screened radiographs and standing long-leg radiographs of both groups were compared. Results: Median AP position of the femoral component was 3 degrees varus (−5 to 9) using PSG versus 2 degrees varus (−10 to 8) for the conventional group. For the femoral flexion, this was 9 degrees flexion (0-16) using PSG versus 12 degrees flexion (0-20). The tibial median AP position was 1 degree varus (−3 to 7) using PSG versus 2 degrees varus (−5 to 10). The median tibial posterior slope was 5 degrees (1-10) using PSG versus 5 degrees (0-12). All guides aligned well. No conversion to conventional outlining was performed, and no significant changes had to be made to the original approved plan. Operation time, estimated blood loss and postoperative haemoglobin drop were not significantly different between both groups. Discussion: Implant position was not different between both groups, even in the early phase of the learning curve. Perioperative results were not different between both groups. Level of evidence: III. Springer-Verlag Berlin Heidelberg, 2014 Unicompartmental knee arthroplasty nationallicence Patient specific nationallicence Oxford nationallicence Guiding nationallicence Kerens Bart Department of Orthopedic Surgery, AZ Monica, Deurne, Belgium aut Schotanus Martijn Department of Orthopedic Surgery, Orbis Medisch Centrum, Sittard, The Netherlands aut Boonen Bert Department of Surgery, VieCuri Medical Centre, Venlo, The Netherlands aut Kort Nanne Department of Orthopedic Surgery, Orbis Medisch Centrum, Sittard, The Netherlands aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/5(2015-05-01), 1324-1329 0942-2056 23:5<1324 2015 23 167 https://doi.org/10.1007/s00167-014-2849-0 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/s00167-014-2849-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kerens Bart Department of Orthopedic Surgery, AZ Monica, Deurne, Belgium aut NATIONALLICENCE 700 1- Schotanus Martijn Department of Orthopedic Surgery, Orbis Medisch Centrum, Sittard, The Netherlands aut NATIONALLICENCE 700 1- Boonen Bert Department of Surgery, VieCuri Medical Centre, Venlo, The Netherlands aut NATIONALLICENCE 700 1- Kort Nanne Department of Orthopedic Surgery, Orbis Medisch Centrum, Sittard, The Netherlands aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/5(2015-05-01), 1324-1329 0942-2056 23:5<1324 2015 23 167