caa a22 4500 60545602X CHVBK 20210128100215.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00167-013-2589-6 doi (NATIONALLICENCE)springer-10.1007/s00167-013-2589-6 Biomechanical evaluation of meniscal root repair: a porcine study [Elektronische Daten] [Ekkehard Röpke, Sebastian Kopf, Steffen Drange, Roland Becker, Christoph Lohmann, Christian Stärke] Purpose: Meniscal root repair is commonly practised using transtibial pull-out sutures. The purpose of the study was to investigate whether these are effective in restoring contact of the root to its footprint and a normal loading pattern of the cartilage under restricted loading conditions as used post-operatively. Methods: First, a transtibial pull-out suture was simulated using porcine menisci (n=10). It was repetitively loaded (100×; 1-10N) and the elongation of the suture determined. In the second part of the study, porcine knees (n=8) were subjected to repetitive low-level femoro-tibial loads (50 cycles; 100N). A displacement sensor measured the deformation of the cartilage in the area of femoro-tibial contact. The residual deformation of the cartilage, which results from its viscoelastic behaviour, was determined as a measure of the local stress. Three scenarios were investigated: meniscal root intact, detached, and repaired. Results: Repetitive loading caused a median suture elongation of 3.8mm. Residual deformation of the cartilage was increased (p=0.047) with the root detached. Root repair could not restore it to normal (n.s.). Conclusions: In this model, meniscus root repair was not effective in restoring the normal loading pattern of the cartilage because cyclic loading caused an elongation of the repair. Clinical relevance: In practice, this effect might impair the healing of repaired meniscal roots to the tibial bone. Springer-Verlag Berlin Heidelberg, 2013 Meniscus root nationallicence Meniscus horn nationallicence Transtibial repair nationallicence Root repair nationallicence Cartilage nationallicence Röpke Ekkehard Department of Orthopedic Surgery, Otto-von-Guericke-University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany aut Kopf Sebastian Center for Musculoskeletal Surgery, Charité-University Medicine Berlin, Berlin, Germany aut Drange Steffen Department of Orthopedic Surgery, Otto-von-Guericke-University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany aut Becker Roland Department of Trauma and Orthopedic Surgery, Municipal Hospital Brandenburg, Brandenburg, Germany aut Lohmann Christoph Department of Orthopedic Surgery, Otto-von-Guericke-University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany aut Stärke Christian Department of Orthopedic Surgery, Otto-von-Guericke-University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/1(2015-01-01), 45-50 0942-2056 23:1<45 2015 23 167 https://doi.org/10.1007/s00167-013-2589-6 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/s00167-013-2589-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Röpke Ekkehard Department of Orthopedic Surgery, Otto-von-Guericke-University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany aut NATIONALLICENCE 700 1- Kopf Sebastian Center for Musculoskeletal Surgery, Charité-University Medicine Berlin, Berlin, Germany aut NATIONALLICENCE 700 1- Drange Steffen Department of Orthopedic Surgery, Otto-von-Guericke-University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany aut NATIONALLICENCE 700 1- Becker Roland Department of Trauma and Orthopedic Surgery, Municipal Hospital Brandenburg, Brandenburg, Germany aut NATIONALLICENCE 700 1- Lohmann Christoph Department of Orthopedic Surgery, Otto-von-Guericke-University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany aut NATIONALLICENCE 700 1- Stärke Christian Department of Orthopedic Surgery, Otto-von-Guericke-University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/1(2015-01-01), 45-50 0942-2056 23:1<45 2015 23 167