caa a22 4500 605458936 CHVBK 20210128100231.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00167-014-2854-3 doi (NATIONALLICENCE)springer-10.1007/s00167-014-2854-3 Suture anchor repair yields better biomechanical properties than transosseous sutures in ruptured quadriceps tendons [Elektronische Daten] [M. Petri, A. Dratzidis, S. Brand, T. Calliess, C. Hurschler, C. Krettek, M. Jagodzinski, M. Ettinger] Purpose: This human cadaveric study compares the biomechanical properties of quadriceps tendon repair with suture anchors and the commonly applied transosseous sutures. The hypothesis was that suture anchors provide at least equal results concerning gap formation and ultimate failure load compared with transosseous suture repair. Methods: Thirty human cadaveric knees underwent tenotomy followed by repair with either 5.5-mm-double-loaded suture anchors [titanium (TA) vs. resorbable hydroxyapatite (HA)] or transpatellar suture tunnels using No. 2 Ultrabraid™ and the Krackow whipstitch. Biomechanical analysis included pretensioning the constructs with 20N for 30s and then cyclic loading of 250 cycles between 20 and 100N at 1Hz in a servohydraulic testing machine with measurement of elongation. Ultimate failure load analysis and failure mode analysis were performed subsequently. Results: Tendon repairs with suture anchors yielded significantly less gap formation during cyclic loading (20th-250th cycle: TA 1.9±0.1, HA 1.5±0.5, TS 33.3±1.9mm, p<0.05) and resisted significantly higher ultimate failure loads (TA 740±204N, HA 572±67N, TS 338±60N, p<0.05) compared with transosseous sutures. Common failure mode was pull-out of the eyelet within the suture anchor in the HA group and rupture of the suture in the TA and TS group. Conclusion: Quadriceps tendon repair with suture anchors yields significantly better biomechanical results than the commonly applied transosseous sutures in this human cadaveric study. These biomechanical findings may change the future clinical treatment for quadriceps tendon ruptures. Randomised controlled clinical trials are desirable for the future. Level of evidence: Not applicable, controlled laboratory human cadaveric study. Springer-Verlag Berlin Heidelberg, 2014 Quadriceps tendon repair nationallicence Suture anchors nationallicence Transpatellar tunnels nationallicence Transosseous sutures nationallicence Biomechanics nationallicence Petri M. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut Dratzidis A. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut Brand S. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut Calliess T. Orthopaedic Surgery Department, Hannover Medical School (MHH), Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany aut Hurschler C. Laboratory for Biomaterials and Biomechanics (LBB), Orthopaedic Surgery Department, Hannover Medical School (MHH), Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany aut Krettek C. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut Jagodzinski M. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut Ettinger M. Orthopaedic Surgery Department, Hannover Medical School (MHH), Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/4(2015-04-01), 1039-1045 0942-2056 23:4<1039 2015 23 167 https://doi.org/10.1007/s00167-014-2854-3 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/s00167-014-2854-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Petri M. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut NATIONALLICENCE 700 1- Dratzidis A. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut NATIONALLICENCE 700 1- Brand S. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut NATIONALLICENCE 700 1- Calliess T. Orthopaedic Surgery Department, Hannover Medical School (MHH), Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany aut NATIONALLICENCE 700 1- Hurschler C. Laboratory for Biomaterials and Biomechanics (LBB), Orthopaedic Surgery Department, Hannover Medical School (MHH), Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany aut NATIONALLICENCE 700 1- Krettek C. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut NATIONALLICENCE 700 1- Jagodzinski M. Trauma Department, Hannover Medical School (MHH), Carl-Neuberg-Straße 1, 30625, Hannover, Germany aut NATIONALLICENCE 700 1- Ettinger M. Orthopaedic Surgery Department, Hannover Medical School (MHH), Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/4(2015-04-01), 1039-1045 0942-2056 23:4<1039 2015 23 167