Jonas Widmer

Dr. Jonas Widmer promovierte 2016-2020 an der ETH Zürich auf dem Gebiet der experimentellen und computerbasierten Forschung im Bereich der Wirbelsäulenchirurgie. Neben der akademischen Tätigkeit arbeitet er bei 25Segments in der Forschung und Entwicklung diverser neuer WS-Implantate. Seit November 2020 leitet Dr. Jonas Widmer die Wirbelsäulen Biomechanik Gruppe an der Universitätsklinik Balgrist.



  • Bernal, L.M.B., Schmidt, I.T., Vulin, N., Widmer, J., Snedeker, J.G., Cattin, P.C., Zam, A., Rauter, G., 2018. Optimizing controlled laser cutting of hard tissue (bone). at - Automatisierungstechnik 66, 1072–1082.
  • Caprara, S., Carrillo, F., Snedeker, J.G., Farshad, M., Senteler, M., 2021. Automated Pipeline to Generate Anatomically Accurate Patient-Specific Biomechanical Models of Healthy and Pathological FSUs. Front. Bioeng. Biotechnol. 9.
  • Cornaz, F., Fasser, M.-R., Spirig, J.M., Snedeker, J.G., Farshad, M., Widmer, J., 2020. 3D printed clamps improve spine specimen fixation in biomechanical testing. J Biomech 98, 109467.
  • Cornaz, F., Widmer, J., Farshad-Amacker, N.A., Spirig, J.M., Snedeker, J.G., Farshad, M., 2021a. Intervertebral disc degeneration relates to biomechanical changes of spinal ligaments. The Spine Journal.
  • Cornaz, F., Widmer, J., Farshad-Amacker, N.A., Spirig, J.M., Snedeker, J.G., Farshad, M., 2021b. Biomechanical Contributions of Spinal Structures with Different Degrees of Disc Degeneration. Spine Publish Ahead of Print.
  • Cornaz, F., Widmer, J., Snedeker, J.G., Spirig, J.M., Farshad, M., 2021c. Cross-links in posterior pedicle screw-rod instrumentation of the spine: a systematic review on mechanical, biomechanical, numerical and clinical studies. Eur Spine J 30, 34–49.
  • Farshad, M., Frey, A., Jentzsch, T., Betz, M., Widmer, J., Spirig, J.M., 2021. Reducing the kyphosis effect of anterior short thoracolumbar/lumbar scoliosis correction with an autograft fulcrum effect. BMC Musculoskeletal Disorders 22, 216.
  • Götschi, T., Widmer, J., Cornaz, F., Kimenai, J., Spirig, J.M., Snedeker, J.G., Farshad, M., 2021. Region- and degeneration dependent stiffness distribution in intervertebral discs derived by shear wave elastography. Journal of Biomechanics 121, 110395.
  • Scheibler, A.-G., Götschi, T., Widmer, J., Holenstein, C., Steffen, T., Camenzind, R.S., Snedeker, J.G., Farshad, M., 2018. Feasibility of the annulus fibrosus repair with in situ gelating hydrogels – A biomechanical study. PLOS ONE 13, e0208460.
  • Schoenenberger, A.D., Tempfer, H., Lehner, C., Egloff, J., Mauracher, M., Bird, A., Widmer, J., Maniura-Weber, K., Fucentese, S.F., Traweger, A., Silvan, U., Snedeker, J.G., 2020. Macromechanics and polycaprolactone fiber organization drive macrophage polarization and regulate inflammatory activation of tendon in vitro and in vivo. Biomaterials 249, 120034.
  • Spirig, J.M., Winkler, E., Cornaz, F., Fasser, M.-R., Betz, M., Snedeker, J.G., Widmer, J., Farshad, M., 2021. Biomechanical performance of bicortical versus pericortical bone trajectory (CBT) pedicle screws. Eur Spine J.
  • Widmer, J., Cornaz, F., Scheibler, G., Spirig, J.M., Snedeker, J.G., Farshad, M., 2020a. Biomechanical contribution of spinal structures to stability of the lumbar spine—novel biomechanical insights. The Spine Journal 20, 1705–1716.
  • Widmer, J., Fasser, M.-R., Croci, E., Spirig, J., Snedeker, J.G., Farshad, M., 2020b. Individualized prediction of pedicle screw fixation strength with a finite element model. Computer Methods in Biomechanics and Biomedical Engineering 23, 155–167.
  • Widmer, J., Fornaciari, P., Senteler, M., Roth, T., Snedeker, J.G., Farshad, M., 2019. Kinematics of the Spine Under Healthy and Degenerative Conditions: A Systematic Review. Ann Biomed Eng 47, 1491–1522.
  • Wunderli, S.L., Widmer, J., Amrein, N., Foolen, J., Silvan, U., Leupin, O., Snedeker, J.G., 2018. Minimal mechanical load and tissue culture conditions preserve native cell phenotype and morphology in tendon-a novel ex vivo mouse explant model. Journal of Orthopaedic Research 36, 1383–1390.


  • Cornaz*, Widmer*, Fasser, Snedeker Matzukawa, Spirig, Farshad, 2020. “Is a crosslink beneficial for single level traditional or cortical bone trajectory pedicle screw instrumentation?”. PLOS ONE
  • Cornaz*, Fasser*, Snedeker, Spirig, Farshad, Widmer, 2020.“The biomechanical fundamentals of crosslink-augmentation in dorsal screw-rod instrumentations”. Spine J
  • Cornaz*, Widmer*, Farshad-Amacker, Spirig, Snedeker, Farshad, 2020. “Spinal degeneration is related to reduced mechanical stability of dorsal spinal ligaments”. Spine J
  • Farshad*, Cornaz*, Spirig, Sutter, Farshad-Amacker**, Widmer**, 2020. “Spondylophyte classification based on biomechanical effects on segmental stability”. JBJS
  • Widmer*, Cornaz*, Scheibler, Spirig, Snedeker, Farshad, 2021. “The role of hydrostatic pressure distribution during the course of intervertebral disc degeneration”. Spine
  • Burkhard, Cornaz, Spirig, Wanivenhaus, Loucas, Fasser, Widmer, Farshad, 2021. “Cross-link augmentation in lumbar decompression and fusion surgery does not greatly enhance primary stability.” Spine J
  • Cornaz, Burkhard, Fasser, Spirig, Snedeker, Farshad, Widmer, 2021. “3D printed clamps for fixation of spinal segments in biomechanical testing”. J Biomechanics
  • Balzer, Mühlemann, Jokeit, Snedeker, Farshad, Widmer, 2021. “A deep learning pipeline for automatized assessment of spinal MRI”. IR
  • Roth, Rahm, Jungwirth, Weinberger, Süess, Sutter, Schellenberg, Taylor, Snedeker, Widmer*, Zingg*, 2021. “Restoring range of motion in reduced acetabular version by
    Increasing femoral antetorsion – what about joint load?”, Clinical Biomechanics
  • Fasser, Jokeit, Kalthoff, Romero, Trache, Snedeker, Farshad, Widmer, 2021. "Subject-Specific Alignment and Mass Distribution in Musculoskeletal Models of the Lumbar Spine", Frontiers
  • Fasser, Kuravi, Snedeker, Farshad, Widmer, 2021. "Simulating intervertebral disc response from tetrahedral element based anisotropic hyperelastic finite element material models", Frontiers