Cornel U. de Jongh

Cornel U. de Jongh, Ph.D., Int.P.E.

Senior Staff Consultant

Dr. Cornel de Jongh is a biomedical engineer and licensed professional engineer in mechanical engineering with almost 15 years' experience in injury biomechanics and related projects. He specializes in injury biomechanics, mechanisms of injury and injury causation, motocross and motorcycle safety and analysis, sports-related injury, passive occupant restraints, and computational modeling. Prior to joining ESi, he has been involved in the design, development, and testing of safety products, particularly for the head, neck, shoulder, knee, and ankle. He has conducted research in injury mechanics of the neck as a Senior Lecturer at Stellenbosch University – Stellenbosch, South Africa, where he also taught various biomedical and mechanical engineering courses. Dr. de Jongh continues to act as an external examiner for the University of Cape Town’s Faculty of Health Sciences.

Dr. de Jongh is listed as the co-inventor in four granted patents and four patent publications, of which one has gone on to win numerous trade awards for motorcycle safety innovation. He has been invited to present his work on neck injury prevention at international conferences and as a keynote speaker, including at the Mayo Clinic (Rochester MN) where he was invited to present his work on the development of a novel neck brace to reduce the risk of cervical spine injury in off-road motorcycle riding.

Dr. de Jongh has testified in trial as a subject-matter expert witness in the USA and South Africa and has acted as a consulting expert in the field of injury biomechanics and product design on many other occasions.

Dr. de Jongh is fluent in English and Afrikaans.


  • Optimising the Tether Angle of a Head and Neck Restraint, International Journal of Crashworthiness, October 2023
  • Research and Development Efforts towards the Development of the Leatt ® Turbine System, White Paper, February 2018
  • Research and Development Efforts towards the Production of the Leatt ® C-Frame Carbon Knee Brace, White Paper, August 2014
  • Research and Development Efforts Towards Production of the Leatt-Brace Moto GPX Unrestrained Torso Neck Brace, White Paper, May 2012
  • Predictive Modelling of Cervical Disc Implant Wear, Journal of Biomechanics, Vol. 41(15), January 2008
  • Dynamic Simulation of Cervical Spine Following Single-Level Cervical Disc Replacement, 29th IEEE EMBS Annual International Conference, August 2007

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