Rami Hashish, PhD, DPT

Principal | Director, Biomechanics

Dr. Rami Hashish is a Principal at the National Biomechanics Institute. Dr. Hashish holds a PhD in Biokinesiology (with an emphasis in Biomechanics) from the University of Southern California, a Doctorate of Physical Therapy (DPT) from the University of Washington School of Medicine, a Diploma in Traffic Crash Reconstruction for the Forensic Engineer from Northwestern University, and is a certified Slip and Fall Tribometrist by Excel Tribometers. Dr. Hashish specializes in determining injury potential and mitigation across a variety of settings, including, motor vehicle accidents, slip, trip, & fall events, criminal offenses, workplace environments, and athletic participation.

Dr. Hashish’s primary research focus is in human injury biomechanics. He also has experience with human factors and medical imaging, examining the effects of dual tasking in both neurologically intact and impaired individuals, and conducting cadaveric and computational studies on the foot and calf. In addition to his role at NBI, Dr. Hashish is Adjunct Clinical Faculty in USC’s Division of Biokinesiology and Physical Therapy, and is a Medical Correspondent for Dignity Health. As an instructor in musculoskeletal and systems anatomy at USC, Dr. Hashish has participated in more than 100 human cadaver dissections.

Dr. Hashish has more than 35 peer-reviewed publications, serves as an editor for the Journal of Ergonomics, and on the editorial review board for various high impact medical and biomechanics journals. Prior to joining NBI, Dr. Hashish served as a Senior Consultant in Biomechanics at Exponent, as the Director of Rehabilitation Medicine at UrbanMed in Los Angeles, California, as a Contributing Columnist for The Huffington Post, and as a Medical Expert for Runner’s World.

PhD, Biokinesiology (Emphasis in Biomechanics), University of Southern California, 2014

DPT, Doctorate of Physical Therapy, University of Washington School of Medicine, 2009

BA, Communications (Emphasis in Journalism), University of Washington, 2006

Principal, National Biomechanics Institute

Adjunct Clinical Faculty, USC Division of Biokinesiology and Physical Therapy

Abbreviated Injury Scale Subcommittee Member, Association for the Advancement of Automotive Medicine

Senior Associate in Biomechanics, Exponent, 2015-2016

Medical Correspondent / Contributing Columnist, Dignity Health, 2014-2016

Director of Physical Therapy, UrbanMed, 2014-2015

Co-Founder & CTO, JavanScience, 2012-2015

Teaching / Research Assistant, USC Division of Biokinesiology and Physical Therapy, 2009-2014

Medicine and Science in Sports and Exercise

Gait and Posture

Journal of Strength and Conditioning Research

Human Movement Sciences

International Journal of Sports Medicine

Journal of Sports Science & Medicine

Journal of Forensic & Legal Medicine

Licensed Physical Therapist, California, #38319

Traffic Crash Reconstruction for the Forensic Engineer, Northwestern University

Traffic Crash Analysis Using Virtual Crash Simulation, Forensic Training Group

CDR Technician Level 1 & 2, Collision Safety Institute

CXLT, Excel Tribometers

Diploma in Photography, Shaw Academy

Hashish R, Komari O, Limousis-Gayda M. Determining Cervical Disc Injury Potential in Motor Vehicle Collisions. American Society of Biomechanics. Rochester, Minnesota. August 2018.

Komari O, Hashish R. The Bracing Paradox: Should Occupants Brace During Frontal Motor Vehicle Collisions? World Congress of Biomechanics. Dublin, Ireland. July 2018.

Hashish R, Badday H. Frequency of Acute Cervical and Lumbar Pathology in Common Types of Motor Vehicle Accidents: A Retrospective Record Review. BMC Musculoskeletal Disorders. 2017.

Hashish R, Toney-Bolger ME, Sharpe SS, Lester BD, Mulliken A. Texting During Stair Negotiation and Implications for Fall Risk. Gait & Posture, 2017. 58: 409-414. Komari SO, Hashish R. The Effect of Pre-Existing Damage on Delta-V Calculations in Rear-End Vehicle Collisions. American Society of Civil Engineers. Duluth, MN. September 2017.

Hashish R, Toney-Bolger ME, Sharpe SS, Lester BD. Texting During Stair Negotiation and Implications for Fall Risk. American Society of Biomechanics Midwest. Grand Rapids, MI. February 2017.

Hashish R, Samarawickrame S, Baker L, Salem GJ. The Influence of a Bout of Exertion on Novice Barefoot Running Dynamics. Journal of Sports Science & Medicine, 2016. 15: 327-334.

Hashish, R, Samarawickrame S, Sigward S, Azen SP, Salem GJ. Lower-limb dynamics and clinical outcomes for habitually shod runners who transition to barefoot running. Physical Therapy in Sport, 2016. In Press.

Lester BD, Hashish R, Kim R, Moorman H, Hildebrand E, Schwark J, Rauschenberger R, Young D. Mobile device usage influences gaze patterns to obstacles during locomotion. The Industrial & Systems Engineering Research Conference, 2016.

Kim R, Lester BD, Hashish R, Cades D, Moorman H, Young D. Gaze behavior during curb approach: The effect of mobile device use. Human Factors and Ergonomics Society Annual Meeting, 2016.

Hashish R, Lester BD, Mulliken A, Koehring J, Perlmutter S. Texting Affects Gait Metrics Associated with Slips, Trips, and Falls. The Industrial & Systems Engineering Research Conference, Anaheim, CA, May 2016.

Hashish R, Samarawickrame S, Powers CM, Salem GJ. Lower Limb Dynamics Vary in Habitually Shod Runners who Acutely Transition to Barefoot Running, 2016. Journal of Biomechanics. 49: 284-288.

Dubois AM, Hashish R, Samarawickrame SD, Salem GJ. Changes in Joint Contributions to the Support Impulse During an Acute Transition to Barefoot Running. American College of Sports Medicine, San Diego, CA, May 2015.

Hashish R. Staggering Epidemiological Data Indicates the Need for a Paradigm Shift in Ergonomic Standards of Older Adult Footwear. Journal of Ergonomics, 2015. 7: Open Access.

Hashish R, Samarawickrame S, Wang MY, Yu SY, Salem GJ. The Association Between Unilateral Heel Rise Performance with Static and Dynamic Balance in Community Dwelling Older Adults. Geriatric Nursing, 2015. 36: 30-34.

Hashish R, Samarawickrame SD, Salem GJ. A Comparison of Dorsal and Heel Plate Foot Tracking Methods on Lower Extremity Dynamics. Journal of Biomechanics, 2014. 47:1211-1214.

Hashish R, Samarawickrame S, Gaur K, Salem GJ. Do Western Shoe Runners Inherently Adopt the Habituated Barefoot Pattern. World Congress of Biomechanics, Boston, MA, July 2014.

Samrawickrame S, Hashish R, Ward S, Colletti P, Salem G. Calf and Foot Muscle Adaptations in Western Shod Runners After a Transition to Barefoot Running. World Congress of Biomechanics, Boston, MA, July 2014.

Hashish R, Samarawickrame SD, Salem GJ. The Association Between Heel-Rise Performance and Static Balance in Community Dwelling Older Adults. International Society of Biomechanics Bi-Annual Conference, Brazil, August 2013.

Hashish R, Samarawickrame SD, Gaur K, Salem GJ. Tibialis Posterior Muscle Activation Strategies in Novice Barefoot Runners Before and After Exertion. International Society of Biomechanics – Footwear Biomechanics Group Bi-Annual Conference, Brazil, July 2013.

Samarawickrame SD, Hashish R, White E, Ward S, Colletti P, SalemGJ. Validity and Reliability of Foot Muscle Volume Determination by Magnetic Resonance Imaging. International Society of Biomechanics Bi- Annual Conference, Brazil, August 2013.

Wang MY, Yu SS, Hashish R, Samarawickrame SD, Kazadi L, Greendale GA, Salem GJ. The biomechanical demands of standing yoga poses in seniors: The Yoga Empowers Seniors Study (YESS). BMC Complementary and Alternative Medicine, 2013. Open Access.

Salem GJ, Yu SS, Wang MY, Samarawickrame SD, Hashish R, Greendale GA. Physical Demands of Hatha Yoga Postures Performed by Older Adults. Evidenced-Based Complementary and Alternative Medicine, 2013. Open Access.

Samarawickrame SD, Hashish R, Gaur K, Salem GJ. Adaptations in Plantar-flexor Performance and Length-Tension Relationship following a transition from Shod to Barefoot running. International Society of Biomechanics – Footwear Biomechanics Group Bi-Annual Conference, Brazil, July 2013.

Samarawickrame SD, Hashish R, Gaur K, Salem GJ. Exertion Modulates Ankle Joint Co-Activation During Novel Barefoot and Post-Transition Barefoot Running Conditions. American Society of Biomechanics, August 2012.

Hashish R, Samarawickrame S, Gaur K, Salem GJ. Mechanical Demand Distribution During Shod and Novice Barefoot Running. American Society of Biomechanics, August 2012.

Samarawickrame SD, Hashish R, Gaur K, Salem GJ. Adaptive Changes in Plantar-flexor Performance Following a Transition from Shod to Barefoot Running. American College of Sports Medicine, June 2012.

Hashish R, Samarawickrame SD, Gaur K, Salem GJ. Adaptation of Contact Dynamics Following an Eight-Week Transition from Shod to Barefoot Running. American College of Sports Medicine, June 2012.

Wang MY, Yu SS, Haines M, Hashish R, Samarawickrame SD, Greendale GA, Salem GJ. Can Yoga Improve Balance Performance in Older Adults? American College Sports Medicine, June 2012.

Yu SS, Wang MY, Samarawickrame S, Hashish R, Kazadi L, Greendale GA, Salem GJ. The Physical Demands of the Tree (Vriksasana) and One-Leg Balance (Utthita Hasta Padangusthasana) Poses Performed by Seniors: A Biomechanical Examination. Evidence-Based Complementary and Alternative Medicine, 2012. Open Access.

Hashish R, Samarawickrame S, Powers CM, Salem GJ. Foot Contact Patterns and Joint Demands in Novice Barefoot Runners Before and After Exertion. APTA Combined Sections Meeting, February 2012.

Samarawickrame SD, Hashish R, Salem GJ. Kinematic and kinetic differences between shod and barefoot running. American Society of Biomechanics, August 2011.

Hashish R, Samarawickrame SD, Salem GJ. Ground reaction forces in barefoot running before and after exertion. American Society of Biomechanics, August 2011.

Wang MY, Yu SS, Hashish R, Samarawickrame SD, Haines M, Mulwitz L, Kazadi L, Greendale GA, Salem GJ. Biomechanics demands of therapeutic hatha yoga poses in older adults: modified chair and downward facing dog. American Society of Biomechanics, August 2011.

Yu SS, Wang MY, Mulwitz L, Haines M, Samarawickrame SD, Hashish R, Kazadi L, Greendale GA, Salem GJ. Conventional wisdom regarding yoga pose modification may not benefit healthy older adults: examining the modified tree pose. American Society of Biomechanics, August 2011.

Samarawickrame S, Wang M-Y, Hashish R, Yu S-Y, Haines M, Mulwitz L, Greendale G, Salem G. Biomechanical Characteristics of the Modified Downward Facing Dog Yoga Pose in Healthy Older Adults. Med Sci Sports Exerc. June 2011; 43(5): S652.

Hashish R, Samarawickrame S, Wang M-Y, Yu S-Y, Tsai LC, Salem G. The Influence Of Different Marker Sets On Lower Extremity Dynamics During Walking. Med Sci Sports Exerc. June 2011; 43(5): S639.

Yu SY, Wang MY, Haines M, Mulwitz L, Hashish R, Samarawickrame S, Kazadi L, Greendale G, Salem G. Lower-extremity Joint Kinematics in Older Adults Performing the Warrior I Pose of Hatha Yoga. Med Sci Sports Exerc. June 2011; 43(5): S652.

Hashish R, Samarawickrame SD, Wang MY, Yu SY, Salem GJ. Normalized Knee Extensor Strength and TUG Performance in Community Dwelling Older Adults. Physical Therapy June 2011.

Kelly VE, Schang AY, Hashish R, Eastman JR, Shumway-Cook A. Effects of Instructional Prioritization and Task Difficulty on Concurrent Walking and Cognitive Task Performance in Healthy Young Adults. J Neurol Phys Ther. 2008; 32(4): 218.

SELECTED LAY PUBLICATIONS

Hashish, R. Using Accident Reconstruction and Biomechanics Experts to Help Win Your Auto Accident Case. Verdict. 2017.

Hashish, R. An Active Approach to Feeling Better: Exercises for Lower Back Pain. Dignity Health. 2016.

Hashish, R. Common Causes of Knee Pain and Effective Preventive Tactics. Dignity Health. 2016.

Hashish, R. The Telemedicine Question: Is e-Health Ethical and Effective? Dignity Health. 2016.

Hashish, R. Managing Patients who Self-Diagnose. Dignity Health. 2015.

Hashish, R. Exercise Frequency and Guidelines for Maintaining Healthy Bones and Joints. Dignity Health. 2015.

Hashish, R. Kobe Bryant: Delusional or a Symbol for Change? The Huffington Post. 2014.

Hashish, R. Ask the Doctor. Runner’s World. 2013.

Hashish, R. Injury by Crossfit. The Huffington Post. 2013.

Hashish, R. Before You Bare. The Running Times. 2013.

Hashish, R. Barefoot Running: The Science Behind the Fad. The Huffington Post. 2012.

Hashish, R. Oscar Pistorius’ Prosthetics Legs: Do they give Him an Advantage Over Other Olympic Runners. The Huffington Post. 2012.