Yasin Dhaher, PhD - Rehabilitation Institute of Chicago

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  • 800,000+ outpatient visits each year
  • 5,000+ inpatients treated each year, system-wide
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  • 182-bed inpatient hospital in the heart of Chicago
  • Largest rehabilitation research center in the world
  • Only rehabilitation hospital with eight federally designated research centers
  • 370+ active research projects in neuroscience, bionics, robotics, and musculoskeletal medicine
  • Academic home of Physical Medicine & Rehabilitation Department, Northwestern University Feinberg School of Medicine

Clinical Trials

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Yasin Dhaher

Yasin Dhaher, PhD

  • Research Scientist, SMPP, RIC
  • Associate Professor, PM&R, BME, NU


Education, Residency and Internship


Michigan State University (East Lansing), PhD, Theoretical Mechanics/Biomechanics
RIC/Northwestern University, Systems Neurophysiology, Post Doctoral Fellowship

Additional Information

Research Lab

Honors & Awards

  • 2007 Fellow, Northwestern Center for Engineering, Education Research (NCEER)
  • 2001 Excellence in Neural Engineering Travel Award, IEEE Engineering in Medicine and Biology Society and National Science Foundation
  • 1999 Baskin Award for Excellence in Research, RIC
  • 1997-1999 Falk Research Fellow, RIC



Salehghaffari S, Dhaher YY. A model of articular cruciate ligament reconstructive surgery: a validation construct and computational insights. J Biomech. 2014 May 7;47(7):1609-17. doi: 10.1016/j.jbiomech.2014.03.003. Epub 2014 Mar 19.

Koehler SR, Dhaher YY, Hansen AH. Cross-validation of a portable, six-degree-of-freedom load cell for use in lower-limb prosthetics research. J Biomech. 2014 Apr 11;47(6):1542-7. doi: 10.1016/j.jbiomech.2014.01.048. Epub 2014 Feb 15.

Krishnan C, Ranganathan R, Kantak SS, Dhaher YY, Rymer WZ. Anodal transcranial direct current stimulation alters elbow flexor muscle recruitment strategies. Brain Stimul. 2014 May-Jun;7(3):443-50. doi: 10.1016/j.brs.2014.01.057. Epub 2014 Jan 29.

Tan AQ, Dhaher YY. Evaluation of lower limb cross planar kinetic connectivity signatures post-stroke. J Biomech. 2014 Mar 21;47(5):949-56. doi: 10.1016/j.jbiomech.2014.01.025. Epub 2014 Jan 20.

Casey E, Hameed F, Dhaher YY. The muscle stretch reflex throughout the menstrual cycle. Med Sci Sports Exerc. 2014 Mar;46(3):600-9. doi: 10.1249/MSS.0000000000000134.


Finley JM, Dhaher YY, Perreault EJ. Acceleration dependence and task-specific modulation of short- and medium-latency reflexes in the ankle extensors. Physiol Rep. 2013 Aug;1(3):e00051. doi: 10.1002/phy2.51. Epub 2013 Aug 22.

Krishnan C, Ranganathan R, Dhaher YY, Rymer WZ. A pilot study on the feasibility of robot-aided leg motor training to facilitate active participation. PLoS One. 2013 Oct 11;8(10):e77370. doi: 10.1371/journal.pone.0077370. eCollection 2013.

2012 and prior

Krishnan C, Kotsapouikis D, Dhaher YY, Rymer WZ.  Reducing robotic guidance during robot-assisted gait training improves gait function: a case report on a stroke survivor.  Arch Phys Med Rehab. 2013 Jun;94(6):1202-6. doi: 10.1016/j.apmr.2012.11.016. Epub 2012 Nov 17.

Krishnan C, Ranganathan R, Kantak SS, Dhaher YY, Rymer WZ. Active robotic training improves locomotor function in a stroke survivor.  J Neuroeng Rehabil. 2012 Aug 20;9:57. doi: 10.1186/1743-0003-9-57.

Gregg RD, Dhaher YY, Degani A, Lynch KM.  On the mechanics of functional asymmetry in bipedal walking.  IEEE Trans Biomed Eng. 2012 May;59(5):1310-8. doi: 10.1109/TBME.2012.2186808. Epub 2012 Feb 7.

Cammarata ML, Dhaher YY.   Associations between frontal plane joint stiffness and proprioceptive acuity in knee osteoarthritis.  Arthritis Care Res (Hoboken). 2012 May;64(5):735-43. doi: 10.1002/acr.21589.

Finley JM, Dhaher YY, Perreault EJ.  Contributions of feed-forward and feedback strategies at the human ankle during control of unstable loads.  Exp Brain Res. 2012 Mar;217(1):53-66. doi: 10.1007/s00221-011-2972-9. Epub 2011 Dec 15.

Cammarata ML, Schnitzer TJ, Dhaher YY.  Does knee osteoarthritis differentially modulate proprioceptive acuity in the frontal and sagittal planes of the knee? Arthritis Rheum. 2011 Sep;63(9):2681-9. doi: 10.1002/art.30436.

Cammarata ML, Dhaher YY.   Proprioceptive acuity in the frontal and sagittal planes of the knee: a preliminary study.  Eur J Appl Physiol. 2011 Jul;111(7):1313-20. doi: 10.1007/s00421-010-1757-3. Epub 2010 Dec 8.

Barry MJ, Kwon TH, Dhaher YY.   Probabilistic musculoskeletal modeling of the knee: A preliminary examination of an ACL-reconstruction.  Conf Proc IEEE Eng Med Biol Soc. 2010;2010:5440-3. doi: 10.1109/IEMBS.2010.5626511.

Dhaher Y.Y. Kwon, T. Barry M.  The Effect of Connective Tissue Material Uncertainties on Knee Joint Mechanics under Isolated Loading Conditions, J Biomech. 2010 Dec 1;43(16):3118-25. doi: 10.1016/j.jbiomech.2010.08.005.

Sulzer, J., Gordon, K., Dhaher, Y., Peshkin, M., and Patton, J.  Is hip circumduction necessitated by reduced foot clearance? (Aug;41(8):1709-14. Epub 2010 Jun 24. Stroke; 2010). (Corresponding Author).

Cammarata M. Dhaher, Y.  Gender-specific motor template in response to valgus perturbation at the human knee, Muscle & Nerve. May;41(5):614-23, 2010.

Barry, M J; Kwon, T H; Dhaher, Y Y; Probabilistic Musculoskeletal Modeling of the Knee: A Preliminary Examination of an ACL-Reconstruction, the 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, August 31 - September 4, 2010 Buenos Aires Sheraton Hotel, Buenos Aires, Argentina.

Cammarata M, Dhaher Y, Proprioceptive Acuity in the Frontal and Sagittal Planes in Knee Osteoarthritis. the 34th Annual meeting of teh American Society of Biomechanics, August 18-21, 2010. Providence, RI

Lewek M.D., Hayes T., Moore J.L., Roth H.R., Dhaher Y., Hornby T.G., Allowing intralimb kinematic variability during locomotor training poststroke improves kinematic consistency: a subgroup analysis from a randomized clinical trial, Arch of Phys Med and Rehab, Aug; 89(8):829-39. Epub Jun 11, 2009.

Cruz, T. and Dhaher, Y. Impact of ankle-foot-orthosis on frontal plane behaviors post-stroke, Gait Posture. Oct;30(3):312-6. Epub 2009 Jun 30. 2009.

Cruz, T. Lewek, M.D. and Dhaher, Y. Biomechanical Impairments and Gait Adaptations Post-Stroke: Multi-factorial Associations. J of Biomech, Aug 7; 42(11):1673-7. Epub May 20, 2009.

Hunter B., Thelen D. Dhaher Y.  A three-dimensional biomechanical evaluation of quadriceps and hamstrings function using electrical stimulation, IEEE Tran Neural Syst Rehabil Eng; 17(2):167-75, 2009. (Cover article)

Gordon K.E., Wu M., Kahn J.H., Dhaher Y.Y. and Schmit, B.D. Ankle Load Modulates Hip Kinetics during Human Locomotion, J of Neurophysiol, Apr;101(4):2062-76, 2009.

Cruz, T and Dhaher Y. Impaired Lower Limb Muscle Synergies Post-Stroke. Proceedings of the 31st Annual International Conference of the IEEE EMBS Minneapolis, Minnesota, USA, September 2-6, 2009.

Finley, J. Dhaher, Y. Perreault, E. Regulation of Feed-Forward and Feedback Strategies at the Human Ankle During Balance Control. Proceedings of the 31st Annual International Conference of the IEEE EMBS Minneapolis, Minnesota, USA, September 2-6, 2009.

Finley JM, Perreault EJ, Dhaher Y. Heteronymous Reflex Contributions to Circumduction in Stroke, Exp Brain Res. July;188(4):529-40, 2008.

Cammarata M. Dhaher, Y. The differential effects of gender, anthropometry, and prior hormonal state on frontal plane knee joint stiffness. J of Clin Biomech, Aug;23(7):937-45, 2008.

Keshner, E. and Dhaher Y. Characterizing Head Motion in 3 Planes during Combined Visual and Base of Support Disturbances in Healthy and Visually Sensitive Subjects. Gait and Posture, 28(1): pp. 127-134, 2008.

Cruz, T. and Dhaher, Y.  Evidence of torque synergies in the lower extremities after stroke. Stroke, 39(1): pp.139-147, 2008. (Cover article)

Hernandez A, Dhaher Y. Thelen D. In vivo measurement of dynamic muscle function at postures representative of early swing phase. J of Biomech, 41(1): pp. 137-144, 2008.

Lewek MD, Hornby TG, Dhaher Y., Schmit BD, Prolonged Quadriceps Activity Following Imposed Hip Extension : A Neurophysiological Mechanism for Stiff-Knee Gait. J of Neurophysiol, 98(6): pp. 3153-3162, 2007.

Keshner, E., Dhaher Y., Streepey J. W., Hain T., Pairing virtual reality with dynamic posturography serves to differentiate between patients experiencing visual vertigo. J of NeuroEngineering and Rehab, 9; pp. 4:24. 2007.

Cruz, T. and Dhaher, Y. Compensatory Gait Movements Post Stroke: Influence of Synergies. North American Congress on Biomechanics, August 05-09, 2008. Ann Arbor, MI

Cammarata C, and Dhaher, Y. Proprioceptive Sensitivity in Constrained and Unconstrained Degrees Of Freedom. North American Congress on Biomechanics, August 05-09, 2008. Ann Arbor, MI

Cammarata M, DeMott T, Dhaher Y. Evidence of gender specific motor templates to resist a valgus perturbation at the knee. American Society of Biomechanics Conference, Aug 22-25, 2007. Palo Alto, CA (Won the Clinical Biomechanics Award)

Hunter B, Thelen D., Dhaher Y. Experimental evaluation of model-based lower extremity induced accelerations. American Society of Biomechanics Conference, August 22-25, 2007. Palo Alto, CA

Hayes, T. and Dhaher, Y. Torque coupling post stroke: implication for gait. American Society of Biomechanics Conference, August 22-25, 2007. Palo Alto, CA

Research Interests

Neuromechanics; orthopedic biomechanics

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