caa a22 4500 605457905 CHVBK 20210128100226.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s00167-013-2590-0 doi (NATIONALLICENCE)springer-10.1007/s00167-013-2590-0 Double intramedullary cortical button versus suture anchors for distal biceps tendon repair: a biomechanical comparison [Elektronische Daten] [Sebastian Siebenlist, Arne Buchholz, Julian Zapf, Gunther Sandmann, Karl Braun, Frank Martetschläger, Alexander Hapfelmeier, Tobias Kraus, Andreas Lenich, Peter Biberthaler, Florian Elser] Purpose: The aim of this biomechanical in vitro study was to compare the novel technique of double intramedullary cortical button (DICB) fixation with the well-established method of suture anchor (SA) fixation for distal biceps tendon repair. Methods: A matched-pair analysis (24 human cadaveric radii) was performed with respect to cyclic loadings and failure strengths. Twelve specimens per group were cyclically loaded for 1,000 cycles at 1.5Hz from 5 to 50N and from 5 to 100N, respectively. The tendon-bone displacement was optically analysed using the Image J Software (National Institute of Health). Afterwards, all specimens were pulled to failure. Maximum load to failure and mode of failure were recorded. Results: All DICB constructs passed the cyclic loading test, whereas 4 of the 12 specimens within the SA group failed by anchor pull-out. Cyclic loading showed a mean tendon-bone displacement of 0.6±1.4mm for the DICB group and 1.4±1.4mm for the SA group (n.s.) after 1,000 cycles with 50N, and a mean displacement of 2.1±2.4mm for the DICB group and 3.5±3.7mm for the SA group (n.s.) after 1,000 cycles with 100N. Load to failure testing showed a mean failure load of 312±76N and a stiffness of 67.1±11.7N/mm for the DICB technique. The mean load to failure for the SA repair was 200±120N (n.s.) and the stiffness was 55.9±21.3N/mm (n.s.). Conclusions: The novel technique of DICB fixation showed small tendon-bone displacement during cyclic testing and reliable fixation strength to the bone in load to failure. Moreover, all DICB constructs passed cyclic loadings without failure. Based on the current findings, a more aggressive postoperative rehabilitation may be allowed for the DICB repair in clinical use. Springer-Verlag Berlin Heidelberg, 2013 Distal biceps rupture nationallicence Tendon repair nationallicence Intramedullary cortical button nationallicence Suture anchor nationallicence Biomechanics nationallicence Siebenlist Sebastian Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut Buchholz Arne Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut Zapf Julian Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut Sandmann Gunther Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut Braun Karl Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut Martetschläger Frank Department of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technical University Munich, Munich, Germany aut Hapfelmeier Alexander Institute of Medical Statistics and Epidemiology, Klinikum rechts der Isar, Technical University Munich, Munich, Germany aut Kraus Tobias BG Traumacenter, Eberhard Karls University, Tübingen, Germany aut Lenich Andreas Department of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technical University Munich, Munich, Germany aut Biberthaler Peter Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut Elser Florian Centre of Orthopaedic Surgery, Hessingpark-Clinic, Augsburg, Germany aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/3(2015-03-01), 926-933 0942-2056 23:3<926 2015 23 167 https://doi.org/10.1007/s00167-013-2590-0 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/s00167-013-2590-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Siebenlist Sebastian Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut NATIONALLICENCE 700 1- Buchholz Arne Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut NATIONALLICENCE 700 1- Zapf Julian Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut NATIONALLICENCE 700 1- Sandmann Gunther Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut NATIONALLICENCE 700 1- Braun Karl Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut NATIONALLICENCE 700 1- Martetschläger Frank Department of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technical University Munich, Munich, Germany aut NATIONALLICENCE 700 1- Hapfelmeier Alexander Institute of Medical Statistics and Epidemiology, Klinikum rechts der Isar, Technical University Munich, Munich, Germany aut NATIONALLICENCE 700 1- Kraus Tobias BG Traumacenter, Eberhard Karls University, Tübingen, Germany aut NATIONALLICENCE 700 1- Lenich Andreas Department of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technical University Munich, Munich, Germany aut NATIONALLICENCE 700 1- Biberthaler Peter Department of Trauma Surgery, Klinikum rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany aut NATIONALLICENCE 700 1- Elser Florian Centre of Orthopaedic Surgery, Hessingpark-Clinic, Augsburg, Germany aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/3(2015-03-01), 926-933 0942-2056 23:3<926 2015 23 167