Henry Ahn


Associate Scientist, Li Ka Shing Knowledge Institute


Dr. Henry Ahn is an orthopaedic surgeon and Associate Scientist in the Li Ka Shing Knowledge Institute at St. Michael’s Hospital.  He has a PhD in Clinical Epidemiology from the Institute of Health Policy, Management and Evaluation (IHPME) at the University of Toronto. His clinical practice is focused on the management of polytrauma patients with significant orthopaedic injuries, spinal cord injuries, along with complex adult spinal disorders. Dr. Ahn is a member of the University of Toronto Spine Program and is a Principal Investigator with the Rick Hansen Registry.  He has a research interest in the management of spinal cord injury and the epidemiology of spinal cord injury incorporating large databases, prospective cohort studies, along with randomized control trials.

Recent Publications

  1. Sprague, S, Slobogean, GP, Bogoch, E, Petrisor, B, Garibaldi, A, O'Hara, N et al.. Vitamin D Use and Health Outcomes After Surgery for Hip Fracture. Orthopedics. 2017;40 (5):e868-e875. doi: 10.3928/01477447-20170907-01. PubMed PMID:29039872 .
  2. Shojaei, MH, Alavinia, M, Craven, BC, Cheng, CL, Plashkes, T, Shen, T et al.. Abstracts and Workshops 7th National Spinal Cord Injury Conference November 9 - 11, 2017 Fallsview Casino Resort Niagara Falls, Ontario, Canada. J Spinal Cord Med. 2017;40 (6):813-869. doi: 10.1080/10790268.2017.1369666. PubMed PMID:29034821 .
  3. Dvorak, MF, Cheng, CL, Fallah, N, Santos, A, Atkins, D, Humphreys, S et al.. Spinal Cord Injury Clinical Registries: Improving Care across the SCI Care Continuum by Identifying Knowledge Gaps. J. Neurotrauma. 2017;34 (20):2924-2933. doi: 10.1089/neu.2016.4937. PubMed PMID:28745934 PubMed Central PMC5653140.
  4. Rivers, CS, Fallah, N, Noonan, VK, Whitehurst, DG, Schwartz, CE, Finkelstein, JA et al.. Health Conditions: Effect on Function, Health-Related Quality of Life, and Life Satisfaction After Traumatic Spinal Cord Injury. A Prospective Observational Registry Cohort Study. Arch Phys Med Rehabil. 2017; :. doi: 10.1016/j.apmr.2017.06.012. PubMed PMID:28732686 .
  5. Hicks, KE, Zhao, Y, Fallah, N, Rivers, CS, Noonan, VK, Plashkes, T et al.. A simplified clinical prediction rule for prognosticating independent walking after spinal cord injury: a prospective study from a Canadian multicenter spinal cord injury registry. Spine J. 2017;17 (10):1383-1392. doi: 10.1016/j.spinee.2017.05.031. PubMed PMID:28716636 .
  6. Paquet, J, Rivers, CS, Kurban, D, Finkelstein, J, Tee, JW, Noonan, VK et al.. The impact of spine stability on cervical spinal cord injury with respect to demographics, management, and outcome: a prospective cohort from a national spinal cord injury registry. Spine J. 2018;18 (1):88-98. doi: 10.1016/j.spinee.2017.06.032. PubMed PMID:28673827 .
  7. Ahn, H, Lewis, R, Santos, A, Cheng, CL, Noonan, VK, Dvorak, MF et al.. Forecasting Financial Resources for Future Traumatic Spinal Cord Injury Care Using Simulation Modeling. J. Neurotrauma. 2017;34 (20):2917-2923. doi: 10.1089/neu.2016.4936. PubMed PMID:28594315 PubMed Central PMC5653147.
  8. Fehlings, MG, Cheng, CL, Chan, E, Thorogood, NP, Noonan, VK, Ahn, H et al.. Using Evidence To Inform Practice and Policy To Enhance the Quality of Care for Persons with Traumatic Spinal Cord Injury. J. Neurotrauma. 2017;34 (20):2934-2940. doi: 10.1089/neu.2016.4938. PubMed PMID:28566019 PubMed Central PMC5652974.
  9. Cheng, CL, Noonan, VK, Shurgold, J, Chen, J, Rivers, CS, Hamedani, HK et al.. Geomapping of Traumatic Spinal Cord Injury in Canada and Factors Related to Triage Pattern. J. Neurotrauma. 2017; :. doi: 10.1089/neu.2016.4929. PubMed PMID:28325105 PubMed Central PMC5652977.
  10. Fixation using Alternative Implants for the Treatment of Hip fractures (FAITH) Investigators. Fracture fixation in the operative management of hip fractures (FAITH): an international, multicentre, randomised controlled trial. Lancet. 2017;389 (10078):1519-1527. doi: 10.1016/S0140-6736(17)30066-1. PubMed PMID:28262269 PubMed Central PMC5597430.
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Affiliations & Other Activities

  • Assistant Professor, Division of Orthopaedic Surgery, University of Toronto
  • Assistant Professor, University of Toronto Spine Program, University of Toronto