Research Team

Timothy Hewett, Ph.D. is the director of the Orthopedic Biomechanics Laboratory and the director of Sports Medicine Research and has a primary appointment as a consultant and professor within the Department of Orthopedic Surgery, and joint appointments as a professor in physiology and biomedical engineering and in physical medicine and rehabilitation at Mayo Clinic.

The diversity of appointments and Dr. Hewett's role as a principal investigator has allowed him to organize, execute and oversee large-scale investigations of in vivo, in vitro, and in silico kinetics and kinematics. These scientific investigations have been clinically translated into impactful advancements in the treatment, diagnosis and prevention of athletic knee injuries, with particular regard to the anterior cruciate ligament.

Dr. Hewett's previous experience and current position afford him the privilege to collaborate with many other professionals in fields such as biomedical engineering, rehabilitation, physiology, cell biology, orthopedics and other various allied medical professions. Dr. Hewett has more than 20 years of experience in biomechanics and sports-related research with over 300 peer-reviewed articles published.

Nathaniel A. (Nate) Bates, Ph.D. received his degree in biomedical engineering from the University of Cincinnati. He has more than nine years of experience conducting in vitro and in vivo testing and biomechanical modeling. His dissertation focused on investigating anterior cruciate ligament (ACL) and medial collateral ligament (MCL) biomechanics during six degree-of-freedom, robotically simulated athletic tasks. His current projects continue to focus on sports medicine biomechanics through in vivo, in vitro and in silico musculoskeletal modeling, including the development and experimental use of a mechanical impact simulator that recreates ACL injuries with clinical presentation.

Dr. Bates has published over 30 peer-reviewed articles in the area of biomechanics and sports medicine. Dr. Bates is currently the lab supervisor for the Orthopedic Biomechanics Laboratory at Mayo Clinic and has worked directly with Dr. Hewett since 2009. He was previously a postdoctoral researcher at the Sports Health and Performance Institute at The Ohio State University.

Shirley M. Kingsley-Berg, CCRP received her Bachelor of Science in Management degree from the University of Phoenix. She is a Certified Clinical Research Professional (CCRP) and has over 32 years of research, clinical and education experience at Mayo Clinic. Kingsley-Berg joined the Orthopedic Biomechanics Laboratory in 2017. In addition, she manages a training grant (T32) that funds two predoctoral students and six postdoctoral fellows at Mayo Clinic, and also manages 30 Ph.D. students in the Biomedical Engineering and Physiology track of the Mayo Clinic Graduate School of Biomedical Sciences. She is the editorial coordinator for Physiology Journal published by the American Physiological Society. Kingsley-Berg has published 10 articles in peer-reviewed scientific journals related to the fields of physiology, neurology and pediatrics.

April L. McPherson, received her bachelor of science in biomedical engineering from the University of Cincinnati in 2016. During her undergraduate program, she worked with Dr. Hewett's lab at Cincinnati Children's Hospital Medical Center. She also worked for Motus Global in Long Island, New York, doing biomechanical assessments on athletes of all levels and helping to develop wearable technology devices. She is currently pursuing her doctorate from the Mayo Clinic Graduate School of Biomedical Sciences in Biomedical Engineering and Physiology. Her dissertation focuses on how cognitive function affects anterior cruciate ligament (ACL) injury. Other research interests include using shear wave ultrasound technology on musculoskeletal applications and ulnar collateral ligament (UCL) injury in baseball athletes.

Nathan D. Schilaty, D.C., Ph.D. has dual doctorate degrees — a doctorate in neuroscience (Brigham Young University, 2014) and a doctorate of chiropractic degree (Parker University, 2007). He worked in biomechanics research with Dr. Hewett at The Ohio State University in the Sports Health and Performance Institute and at Mayo Clinic in the Department of Orthopedic Surgery and the Division of Sports Medicine.

His projects include epidemiology of second ACL injury, cadaveric modeling of ACL injury, biofeedback for ACL prevention and rehabilitation, and neural mechanisms of ACL injury prevention and rehabilitation. His primary work in biomechanics emphasizes neuromechanics, which includes sensorimotor integration, proprioception, biofeedback and analysis of neural signaling.

Robby Sikka, M.D. (external collaborator) is an innovator in injury and performance analytics. He presently serves as an analytics consultant to three NBA teams, and serves as the sports scientist for the Minnesota Vikings. He is also an injury and analytics consultant to the National Basketball Player’s Association and has worked with numerous teams in the NCAA, NFL, NHL and MLB to assist with analytics, technology integration and research. Dr. Sikka has published over thirty peer-reviewed manuscripts, many on return to play and performance after injury, and his research has been presented at dozens of national and international sports analytics and sports medicine meetings.

Dr. Sikka attended the University of Pennsylvania for his undergraduate studies and the Keck School of Medicine of USC for medical school. After graduating with honors from both schools, he completed an anesthesiology residency at the University of Minnesota with a special interest in sports, physiology and technology.