caa a22 4500 605459614 CHVBK 20210128100234.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s00167-014-3029-y doi (NATIONALLICENCE)springer-10.1007/s00167-014-3029-y Variability of tunnel positioning in fluoroscopic-assisted ACL reconstruction [Elektronische Daten] [Shafizadeh Sven, Balke Maurice, Juergen Hoeher, Banerjee Marc] Purpose: Intraoperative fluoroscopy has been proposed as a feasible method to improve the accuracy of anatomical tunnel positioning. However, it has so far not been determined, whether this technique reduces the variability of tunnel positioning in a clinical set-up. Therefore, the purpose of this study was to determine the variability of tunnel positions applying intraoperative fluoroscopy. Methods: Femoral and tibial tunnel positions of 112 fluoroscopic ACL reconstruction cases were determined according to validated radiological measurement methods. Mean positions, standard deviations and ranges were calculated to determine the variability of the tunnel positions. Subgroup variability analysis was performed to analyse cases in which tunnel positions were corrected. Results: Applying intraoperative fluoroscopy, the variability of tunnel positions was found to be 3% at the femur (range 15.4%) and 2.3% at the tibia (9.7%). In 34 cases (30.0%), non-satisfactory tunnel positions were identified and could be corrected achieving more accurate positions regarding to radiological parameters (14× femur, 16× tibia, 4× femur and tibia). Conclusions: The results of the presented study indicate that intraoperative fluoroscopy allows to identify non-accurate tunnel positions regarding to radiological criteria. The determined low variability indicates that fluoroscopic-based ACL reconstruction can be recommended as a feasible, easy and effective adjunct that enables surgeons to create more consistent and reliable tunnel positions in ACL reconstruction. Level of evidence: IV. Springer-Verlag Berlin Heidelberg, 2014 ACL reconstruction nationallicence Fluoroscopy nationallicence Fluoroscopic-assisted ACL reconstruction nationallicence Tunnel positioning nationallicence Radiological measurement nationallicence Variability nationallicence Accuracy nationallicence Sven Shafizadeh Department of Trauma and Orthopaedic Surgery, Cologne Merheim Medical Centre, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany aut Maurice Balke Department of Trauma and Orthopaedic Surgery, Cologne Merheim Medical Centre, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany aut Hoeher Juergen Orthopaedics and Sports Traumatology, Cologne Merheim Medical Centre, Ostmerheimer Strasse 200, 51109, Cologne, Germany aut Marc Banerjee Department of Trauma and Orthopaedic Surgery, Cologne Merheim Medical Centre, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/8(2015-08-01), 2269-2277 0942-2056 23:8<2269 2015 23 167 https://doi.org/10.1007/s00167-014-3029-y 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/s00167-014-3029-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sven Shafizadeh Department of Trauma and Orthopaedic Surgery, Cologne Merheim Medical Centre, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany aut NATIONALLICENCE 700 1- Maurice Balke Department of Trauma and Orthopaedic Surgery, Cologne Merheim Medical Centre, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany aut NATIONALLICENCE 700 1- Hoeher Juergen Orthopaedics and Sports Traumatology, Cologne Merheim Medical Centre, Ostmerheimer Strasse 200, 51109, Cologne, Germany aut NATIONALLICENCE 700 1- Marc Banerjee Department of Trauma and Orthopaedic Surgery, Cologne Merheim Medical Centre, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/8(2015-08-01), 2269-2277 0942-2056 23:8<2269 2015 23 167