Aaron Gray

Aaron Gray, MD


Aaron Gray, MD, practices general sports medicine at the Missouri Orthopaedic Institute. He is the medical director for the MU Human Performance Institute. He is also a physician for University of Missouri athletes. He has served as a team physician for United States Youth National Soccer teams on international trips. He is board certified in family medicine and has a certificate of added qualifications in primary care and sports medicine. He specializes in pediatric and adult sports medicine and non-operative treatment of musculoskeletal injuries. His specific areas of interest include stress fractures, overuse injuries, pitching and throwing injuries, sports concussions and injury prevention. A graduate of the University of Tennessee Health Science Center-College of Medicine, Gray completed his family medicine residency at the University of Missouri. He also completed a primary care sports medicine fellowship at the University of California-Los Angeles. While at UCLA, he was the team physician for men's soccer, baseball, men's volleyball and women's golf and assistant team physician for football.

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Trent Guess

Trent Guess, PhD


Trent M. Guess, PhD, is an associate professor in the Departments of Physical Therapy and Orthopaedic Surgery at the University of Missouri. He holds the HealthSouth Professorship at Missouri and is the founding director of the Mizzou Motion Analysis Center (mizzoumotioncenter.com). He received his PhD in mechanical engineering from the University of Kansas, and his area of expertise is in musculoskeletal biomechanics. His research focuses combine experimental and computational methods in movement analysis to study mechanical loading in the knee.

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Marjorie Skubic

Marjorie Skubic, PhD


Marjorie Skubic received her PhD in computer science in 1997 from Texas A&M University, where she specialized in human-robot interaction. She is currently a professor in the electrical engineering and computer science departments at the University of Missouri. She has spent 14 years working in industry on real-time applications. Her current research interests include sensor networks for ambient intelligence, preventative health screening and rehabilitation tools, and exergames for rehabilitation and pre-habilitation. In 2006, Skubic established the Center for Eldercare and Rehabilitation Technology at the University of Missouri and serves as the center director for this interdisciplinary team. The center's work supports proactive models of health care, such as monitoring systems that noninvasively track the physical and cognitive health of elderly residents in their homes and generate alerts for health changes, increasing fall risk and actual falls. The center’s recent work has also investigated automated screening of athletes and pianists to flag injury risks, with support for preventative exercises to reduce the risk, as well as rehabilitation support for stroke patients and patients recovering from hand surgery.

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Brad W. Willis

Brad W. Willis, MPT


Brad W. Willis, MPT, is an assistant teaching professor in the Department of Physical Therapy, School of Health Professions at the University of Missouri. Since graduating with a master’s degree in physical therapy in 2008, Willis has focused his clinical practice on youth and adult orthopaedic rehabilitation. His primary clinical experience has been in a outpatient rehabilitation setting with Mizzou Therapy Services at the Missouri Orthopaedic Institute. Willis became a faculty member in the Department of Physical Therapy at MU in 2015 with ongoing multi-disciplinary research interests focused on the advancement of motion-analysis technology for injury-prevention screening as well as monitoring rehabilitation outcomes. Additional information about Willis’s experience, certifications and scholarly activity may be viewed in his curriculum vitae.

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Dave Echelmeyer

David Echelmeyer, MPT, OCS


David Echelmeyer, MPT, OCS, is a physical therapist and the orthopaedic residency director at Mizzou Therapy Services. In addition to his orthopaedic clinic duties, David is an adjunct faculty member in the Department of Physical Therapy, School of Health Professions at the University of Missouri. Echelmeyer graduated with a master’s degree in physical therapy from Rockhurst University in 2001. He has been a board-certified orthopaedic specialist since 2011. Echelmeyer’s research focus is on the use of motion analysis to determine safe return to sport and identification and correction of faulty movement patterns within an orthopaedic physical therapy population. He currently collaborates with other faculty in the Department of Physical Therapy and physicians at the Missouri Orthopaedic Institute on research using innovative technologies for markerless motion capture.

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