About gaitanalysis.org
Ramiro Olleac, MD is a pediatric orthopaedic surgeon in Tucumán, Argentina, focused on neuromuscular conditions, gait disorders, and deformity correction in children. He works at Hospital Nicolás Avellaneda and is actively involved in clinical care, research, teaching, and international collaborations aimed at improving pediatric orthopaedic care in resource-limited settings.
The gaitanalysis.org website is dedicated to providing free on-demand content to help clinicians and researchers better understand pediatric gait analysis. The website is founded by two pediatric orthopaedic surgeons with expertise in pediatric gait analysis, Vedant Kulkarni, MD and Jon Davids, MD. Contributing experts from across the globe add to this website through their videos, case studies, and lectures.
Terms of Use
​Gaitanalysis.org (hereafter referred to as "website") is being provided by the developers as a public service. The information was compiled from a variety of sources, including peer reviewed studies in other countries. This educational information is for use at the discretion and judgment of the individual user. All treatment decisions made based on this information are within the sole judgment and responsibility of the user exercising independent judgment in this area. The developers of the website make no warranties regarding this material, and are not liable for its use or content. We do not warrant or represent that the medical information on the website will be constantly available, or available at all; or that it is true, accurate, complete, current or non-misleading.
You must not rely on the information from the website as an alternative to medical advice from your doctor or other professional healthcare provider. If you have any specific questions about any medical matter, you should consult your or your family member’s doctor or other professional healthcare provider. If you think you or your family member may be suffering from any medical condition, you should seek immediate medical attention. You should never delay seeking medical advice, disregard medical advice, or discontinue medical treatment because of information contained in this website..
Any assistance you may receive using the website does not constitute specific advice and accordingly should not be relied upon without further independent confirmation.
Vedant Kulkarni, MD serves as vice-chair and assistant chief of orthopedics, medical director of the motion analysis center, and director of orthopedic education and research at Shriners Children’s Northern California. Dr. Kulkarni’s clinical practice includes hip, lower extremity and foot deformities in children, with a special emphasis on neuro-orthopedic conditions such as cerebral palsy and spina bifida.
Dr. Kulkarni’s research interests include the role of artificial intelligence to improve patient care decisions, interpreting the cellular mechanisms of contractures in cerebral palsy, and the use of technology to create ease of access to motion analysis. He is an active member of the Pediatric Orthopaedic Society of North America, and a fellow of the American Academy for Cerebral Palsy and Developmental Medicine and the American Academy of Orthopaedic Surgeons.
Ross Chafetz is the Corporate Director of Motion Analysis Centers at Shriners Children’s, where he leads a network of fourteen laboratories—one of the largest clinical motion analysis systems in the world. He received his physical therapy degree at Columbia University, and his PhD in Public Health to Temple University. With over 30 years of clinical experience and more than two decades at Shriners Children’s, he has built his career at the intersection of patient care, research, and innovation. He been a co-investigator on 9 multi-center grants, and has authored over 60 peer-reviewed publications. He has led initiatives focused on translating biomechanical data into meaningful clinical decision-making while advancing standardization, data integration, and the use of emerging technologies such as markerless motion capture and machine learning.
A central focus of Dr. Chafetz’s leadership is collaboration and knowledge sharing. He has led system-wide efforts to standardize workflows, datasets, and competencies, and expanded this work through an open-access Motion Analysis Resources website featuring educational videos and documents on clinical standards, competencies, and onboarding. He has also developed strategic collaborations with institutions such throughout the U.S. to advance research in biomechanics, surgical outcomes, and artificial intelligence, emphasizing a model of shared data and multidisciplinary innovation to move the field forward. His motion analysis research interests in upper extremity assessments, surgical outcomes, sports analysis, and spine analysis.
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Jon R. Davids. MD is a board certified Pediatric Orthopaedic Surgeon, who is the Emeritus Assistant Chief of Orthopaedics and Medical Director of the Motion Analysis Laboratory at the Shriners Hospitals for Children Northern California; and Professor and Emeritus Ben Ali Chair in Pediatric Orthopaedics in the Department of Orthopaedics at the University of California Davis Medical School in Sacramento, California, USA. Jon has worked for the Shriners Hospitals for Children since 1993.
Jon received his undergraduate degree in Latin American Studies from Brown University,
attended Harvard Medical School, completed a residency in Orthopaedic Surgery at the
University of Colorado, and a fellowship in Pediatric Orthopaedics at the University of
California San Diego Children’s Hospital and Health Center, where he studied gait analysis under David H Sutherland, MD. He has published over 150 articles in peer review
journals, and serves on the editorial boards of the Journal of Pediatric Orthopaedics and
Gait and Posture. He has written 45 textbook chapters on a variety of topics in pediatric
orthopaedics. Jon has lectured extensively at regional, national and international levels,
teaching gait analysis interpretation and clinical applications for children with cerebral
palsy, myelodysplasia, and limb deficiency. He also has a long stand interest in global Orthopaedics, and has led mission trips to Central America for 20 years.