Ryan Chapman headshot

Ryan Chapman


Postdoctoral Research Associate


Ryan began his career as an engineer by earning his undergraduate baccalaureate degree in electrical engineering from The University of St. Thomas in St. Paul, Minnesota. Following professional work in the sporting goods industry, he earned a Master's degree from the University of Iowa in Biomedical Engineering with a focus on human motor performance and upper extremity biomechanics. After successfully re-tooling the University of Virginia Sports Performance (SPEED) lab, he joined the Dartmouth Biomedical Engineering Center(DBEC) as the resident biomechanics expert. His current research efforts are focused on developing medical devices to better diagnose/treat pathologies with symptomatic movement patterns. This includes better characterizing the in-vivo biomechanics of individuals both in and outside the clinic/lab including patients undergoing arthroplasty procedures, athletic injury mechanisms, gait in expectant mothers, and trauma.

Research Interests

Biomechanics; biomedical engineering; wearables; machine learning; medical devices; biomaterials; orthopaedics; sports performance


  • BSEE, Electrical Engineering, University of St. Thomas 2010
  • MS, Biomedical Engineering, University of Iowa 2013
  • PhD, Engineering Sciences, Dartmouth College 2018


  • The Neukom Institute for Computational Science 1st Place Neukom Prize for Undergraduate Research 2020
  • International Society for Technology in Arthroplasty Young Investigator Travel Award 2019
  • Student Commencement Speaker, Thayer School of Engineering at Dartmouth 2019
  • International Shoulder Group Annual ISG Meeting Travel Award 2018
  • Dartmouth Guarini School of Graduate and Advanced Studies Travel Award 2018
  • Force & Motion/Orthopaedic Research Society Young Scientist Award 2018
  • Best Poster – Dartmouth Graduate Student Poster Session 2016
  • The Dartmouth Society of Engineers Prize 2015

Professional Activities

  • Member, Orthopaedic Research Society
  • Member, American Society of Biomechanics
  • Member, Sigma Xi
  • Journal Reviewer, The Knee, Applied Biomechanics, Journal of Biomechanics, ASME Journal of Biomechanical Engineering, Hip International, The Journal of Shoulder and Elbow Surgery
  • Grant Reviewer, New England Pediatric Device Consortium (NEPDC) and Center for Translation of Rehabilitation Engineering Advances and Technology (TREAT)

Research Projects

  • Spinal motion on the ski slope

    Spinal motion on the ski slope

    After spinal trauma on the ski slope, patients are traditionally extracted via backboard, cervical spine collar/blocking, and sled. It is unclear if this process, which can be time consuming, is effective at reducing spinal motion as anticipated. We are utilizing wearable motion tracking sensors to evaluate spinal motion during standard extraction techniques and an experimental approach.

  • Monitoring trauma rehabilitation

    Monitoring trauma rehabilitation

    Rehabilitation compliance following major lower extremity trauma is critical for appropriate recovery. We are utilizing wearable motion tracking sensors and force sensing insoles to monitor this process.

  • Biomechanics analysis and monitoring

    Biomechanics analysis and monitoring

    Biomechanics analysis and monitoring following joint arthroplasty is valuable for achieving optimal recovery. Our laboratory has developed and implemented a novel method for monitoring continuous long term joint function using inertial measurement units (IMUs). Prospective studies are in progress to compare knee and shoulder function before and after arthroplasty. This data can be compared to a cohort of healthy individuals with no known joint arthropathy.

    See more about biomechanics.

Selected Publications

  • Chapman, RM, Moschetti, WE, & Van Citters, DW. Stance and Swing Phase Knee Flexion Recover at Different Rates following Total Knee Arthroplasty: An Inertial Measurement Unit Study. Journal of Biomechanics. 2019; 84 (14): 127–139. doi: 10.1016/j.jbiomech.2018.12.027.
  • Chapman, RM, Torchia, MT, Bell, JE, & Van Citters, DW. Continuously Monitoring Shoulder Motion after Total Shoulder Arthroplasty: Maximum Elevation & Time Spent above 90° Elevation are Critical Metrics to Monitor. Journal of Shoulder & Elbow Surgery. 2019; 28 (8): 1505–1514. doi: 10.1016/j.jse.2019.01.003.
  • Chapman, RM, Torchia, MT, Bell, JE, & Van Citters, DW. Assessing Shoulder Biomechanics of Healthy Elderly Individuals During Activities of Daily Living Using Inertial Measurement Units: High Maximum Elevation Is Achievable but Rarely Used. ASME Journal of Biomechanical Engineering. 2019; 141 (4): 041001–041001 - 7. doi: 10.1115/1.4042433.
  • Kolz, JM, Wyles, CC, Van Citters, DW, Chapman, RM, Trousdale, RT, & Berry, DJ. In Vivo Corrosion of Modular Dual Mobility Implants: A Retrieval Study. Journal of Arthroplasty. 2020; (2020): 1–4. doi: 10.1016/j.arth.2020.05.075.
  • Nezwek, TA, Chapman, RM, Rothy, AC, Van Citters, DW, & Koenig, K. Bilateral Femoral Component Fractures After Primary Total Knee Arthroplasty with Cruciate-Retaining Femoral Component. Arthroplasty Today. 2020; 6(3): 496–501. doi: 10.1016/j.artd.2020.06.001.
  • Chapman, RM, Van Citters, DW, Chapman D, & Dalury, DF. Higher offset cross-linked polyethylene acetabular liners: is wear a significant clinical concern? HIP International. 29 (6): 652–659. doi: doi.org/10.1177/1120700018815339.
  • Gribbin, TC, Slater, LV, Herb, CC, Hart, JM, Chapman, RM, Hertel, J, & Kuenze, CM. Differences in hip-knee joint coupling during gait after anterior cruciate ligament reconstruction. Clinical Biomechanics. 32 (2016): 64–71. doi: 10.1016/j.clinbiomech.2016.01.006.


Investiture 2019: Student Remarks