Patent
Thelen, D., Martin, J., Allen, M., Segalman, D., & Slane, L. (2018). Apparatus for dynamic stress measurement (Patent No. US10631775B2). USPTO.
Core Technology
Martin, J. A., & Thelen, D. G. (2023). A trained neural network model accurately predicts Achilles tendon stress during walking and running based on shear wave propagation. Journal of Biomechanics, 157, 111699. https://doi.org/10.1016/J.JBIOMECH.2023.111699
Schmitz, D. G., Thelen, D. G., & Cone, S. G. (2022). A Kalman Filter Approach for Estimating Tendon Wave Speed from Skin-Mounted Accelerometers. Sensors 2022, Vol. 22, Page 2283, 22(6), 2283. https://doi.org/10.3390/S22062283
Martin, J. A., Kindig, M. W., Stender, C. J., Ledoux, W. R., & Thelen, D. G. (2020). Calibration of the shear wave speed-stress relationship in in situ Achilles tendons using cadaveric simulations of gait and isometric contraction. Journal of Biomechanics, 106, 109799. https://doi.org/10.1016/J.JBIOMECH.2020.109799
Martin, J. A., Schmitz, D. G., Ehlers, A. C., Allen, M. S., & Thelen, D. G. (2019). Calibration of the shear wave speed-stress relationship in ex vivo tendons. Journal of Biomechanics, 90, 9–15. https://doi.org/10.1016/J.JBIOMECH.2019.04.015
Martin, J. A., Brandon, S. C. E., Keuler, E. M., Hermus, J. R., Ehlers, A. C., Segalman, D. J., Allen, M. S., & Thelen, D. G. (2018). Gauging force by tapping tendons. Nature Communications, 9(1), 1592. https://doi.org/10.1038/s41467-018-03797-6
Understanding Movement
Schmitz, D. G., Nuckols, R. W., Lee, S., Akbas, T., Swaminathan, K., Walsh, C. J., & Thelen, D. G. (2022). Modulation of Achilles tendon force with load carriage and exosuit assistance. Science Robotics, 7(71). https://doi.org/10.1126/SCIROBOTICS.ABQ1514
Ebrahimi, A., Loegering, I. F., Martin, J. A., Pomeroy, R. L., Roth, J. D., & Thelen, D. G. (2020). Achilles tendon loading is lower in older adults than young adults across a broad range of walking speeds. Experimental Gerontology, 137, 110966. https://doi.org/10.1016/J.EXGER.2020.110966
Harper, S. E., Roembke, R. A., Zunker, J. D., Thelen, D. G., & Adamczyk, P. G. (2020). Wearable Tendon Kinetics. Sensors, 20(17), 4805. https://doi.org/10.3390/S20174805
Acuña, S. A., Ebrahimi, A., Pomeroy, R. L., Martin, J. A., & Thelen, D. G. (2019). Achilles tendon shear wave speed tracks the dynamic modulation of standing balance. Physiological Reports, 7(23), e14298. https://doi.org/10.14814/PHY2.14298
Harper, S. E., Schmitz, D. G., Adamczyk, P. G., & Thelen, D. G. (2022). Fusion of Wearable Kinetic and Kinematic Sensors to Estimate Triceps Surae Work during Outdoor Locomotion on Slopes. Sensors, 22(4), 1589. https://doi.org/10.3390/S22041589
Keuler, E. M., Loegering, I. F., Martin, J. A., Roth, J. D., & Thelen, D. G. (2019). Shear Wave Predictions of Achilles Tendon Loading during Human Walking. Scientific Reports, 9(1), 1–9. https://doi.org/10.1038/s41598-019-49063-7
Clinical Relevance
Ebrahimi, A., Martin, J. A., Schwartz, M. H., Novacheck, T. F., & Thelen, D. G. (2023). American Society of Biomechanics Clinical Biomechanics Award 2021: Redistribution of muscle-tendon work in children with cerebral palsy who walk in crouch. Clinical Biomechanics, 102, 105871. https://doi.org/10.1016/J.CLINBIOMECH.2023.105871
Ebrahimi, A., Martin, J. A., Schmitz, D. G., & Thelen, D. G. (2020). Shear Wave Tensiometry Reveals an Age-Related Deficit in Triceps Surae Work at Slow and Fast Walking Speeds. Frontiers in Sports and Active Living, 2, 69. https://doi.org/10.3389/FSPOR.2020.00069
Ebrahimi, A., Kuchler, R. L., Pomeroy, R. L., Loegering, I. F., Martin, J. A., & Thelen, D. G. (2021). Normative Achilles and patellar tendon shear wave speeds and loading patterns during walking in typically developing children. Gait & Posture, 88, 185–191. https://doi.org/10.1016/J.GAITPOST.2021.05.023
Ebrahimi, A., Schwartz, M. H., Martin, J. A., Novacheck, T. F., & Thelen, D. G. (2022). Atypical triceps surae force and work patterns underlying gait in children with cerebral palsy. Journal of Orthopaedic Research. https://doi.org/10.1002/jor.25307
Modeling
Blank, J. L., & Thelen, D. G. (2023). Adjacent Tissues Reduce Shear Wave Speeds in Axially Loaded Tendons | Engineering Archive. Engrxiv. https://engrxiv.org/preprint/view/2878/version/4119
Blank, J., Blomquist, M., Arant, L., Cone, S., & Roth, J. (2022). Characterizing Musculoskeletal Tissue Mechanics Based on Shear Wave Propagation: A Systematic Review of Current Methods and Reported Measurements. Annals of Biomedical Engineering, 50(7), 751–768. https://doi.org/10.1007/S10439-022-02935-Y/FIGURES/7
Blank, J. L., Thelen, D. G., & Roth, J. D. (2020). Shear wave speeds track axial stress in porcine collateral ligaments. Journal of the Mechanical Behavior of Biomedical Materials, 105, 103704. https://doi.org/10.1016/J.JMBBM.2020.103704
Blank, J. L., Thelen, D. G., Allen, M. S., & Roth, J. D. (2022). Sensitivity of the shear wave speed-stress relationship to soft tissue material properties and fiber alignment. Journal of the Mechanical Behavior of Biomedical Materials, 125, 104964. https://doi.org/10.1016/J.JMBBM.2021.104964
Blank, J. L., Thelen, D. G., & Roth, J. D. (2019). Ligament Shear Wave Speeds Are Sensitive to Tensiometer-Tissue Interactions: A Parametric Modeling Study. Lecture Notes in Computational Vision and Biomechanics, 36, 48–59. https://doi.org/10.1007/978-3-030-43195-2_5
Blank, J. L., Thelen, D. G., & Roth, J. D. (2019). Ligament Shear Wave Speeds Are Sensitive to Tensiometer-Tissue Interactions: A Parametric Modeling Study. Lecture Notes in Computational Vision and Biomechanics, 36, 48–59. https://doi.org/10.1007/978-3-030-43195-2_5