Douglas W. Van Citters, PhD   


As   principal   investigator   of   the   Dartmouth  Biomedical   Engineering   Center   for   Orthopaedics,   Douglas   Van   Citters   oversees musculoskeletal  biomaterials,  biomechanics,  tribology,  and device design research.  He is also responsible  for  curation  and  research activities  related to Dartmouth’s arthroplasty retrieval collection. His current research interests include polyethylene  wear  mechanisms at the micro- and nano- scales, fatigue properties of novel polyethylene formulations, wear and structure of alternative bearings for total hips,  polymer  structure,  wearable  technologies,  and  implantable  technologies.  Professor  Van  Citters  teaches  Thayer  School’s  two graduate  courses  in  biomaterials,  as  well  as  classical  mechanics  courses.  He  has  been  an  active  collaborator  and  advisor in  the biomaterials  field  for  projects  from the departments of orthopaedics, plastic surgery,  pediatrics,  radiology,  physiology,  and  vascular surgery.

  • Bachelor of Arts, Dartmouth College, 1999
  • Bachelor of Engineering, Thayer School of Engineering, 2003
  • Master of Science, Thayer School of Engineering, 2003
  • Doctor of Philosophy, Thayer School of Engineering, 2006


                                                                               John P. Collier, DE


John Collier is the Myron Tribus Professor of Engineering at Thayer School of Engineering at Dartmouth and the co-founder of DBEC.  He received his A.B. from Dartmouth College and his B.E., M.E., and D.E. degrees from Thayer School of Engineering.  He is a member of the Society for  Biomaterials,  the  Orthopaedic  Research  Society, and the American Academy of Orthopaedic Surgeons.  Collier  has  been a research  consultant for Canadian Oxygen, Ltd., DuPont Inc., and for DePuy, a Johnson and Johnson company.  He  has  authored over 30 technical  articles  and  delivered more than 50 conference presentations on aspects of orthopedic implant design  and  engineering.  He also  holds  three patents for design or processes relating to orthopedic prostheses.  At Thayer School he teaches the  School's  signature course, ENGS 21, Introduction to Engineering, as well as other courses in design methodology.

  • Bachelor of Arts, Dartmouth College, 1972
  • Bachelor of Engineering, Thayer School of Engineering, 1973
  • Master of Engineering, Thayer School of Engineering, 1975
  • Doctor of Engineering, Thayer School of Engineering, 1976


                                                                          Michael B. Mayor, MD     


Michael  Mayor,  co-founder  of  DBEC,  is  the  emeritus  William N. and Bessie Allyn Professor of Surgery in Orthopaedics  at  The  Geisel School  of  Medicine  at  Dartmouth  and  emeritus  Professor of Orthopaedic Surgery at  the  Dartmouth  Hitchcock  Medical  Center.  He received  his  B.E.E. from Yale's Sheffield School of Engineering and his M.D. degree from the Yale School of Medicine.  He is a member of the American Orthopaedic Association,  the American Academy of Orthopaedic Surgeons, and the Orthopaedic Research Society.  Mayor has  served with the F4 Committee of ASTM including terms as chairman,  the FDA's  Advisory  Panel  on  Orthopaedic and  Rehabilitation Devices including terms as chairman,  and on the American Academy of Orthopaedic Surgeons' and the Orthopaedic  Research  Society's committees.  He has authored over 30 published articles and delivered more than  20 conference presentations on orthopaedic  implant retrieval analysis and biomechanics.  He has served on the thesis committees for bachelors, masters, and PhD students at Thayer School of Engineering at Dartmouth for thirty years.

  • Bachelor of Electrical Engineering, Yale University, 1959
  • Doctor of Medicine, Yale University School of Medicine, 1965
  • Internship and Residency, Orthopaedic Surgery, University Hospitals of Cleveland, 1965-70
  • NIH Special Post-Doctoral Fellowship, Case Institute Biomedical Engineering Laboratory, 1970-71
  • Attending Orthopaedic Staff, Dartmouth Hitchcock Medical Center, 1971-2006
  • Faculty, The Geisel School of Medicine at Dartmouth, 1971-present
  • Adjunct Faculty, Thayer School of Engineering at Dartmouth, 1998-present



                        Full Time Research Team

                       Postdoctoral Research Associates


                                                                         Ryan M. Chapman, PhD   


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 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.

  • Bachelor of Science in Electrical Engineering, The University of St. Thomas, 2010
  • Master of Science in Biomedical Engineering, The University of Iowa, 2013
  • Doctor of Philosophy in Engineering Sciences, Thayer School of Engineering, 2018

                                    Research Engineers 


                                                                        Barbara H. Currier, MChE     


Barbara  began  her  work  in orthopaedic device research in 1994 when she joined the Dartmouth Biomedical Engineering Center.  Since 1994,  she  has  been  involved  in  the  study  of  polyethylene bearings in hip and knee prostheses.  Current research work is focused on investigating the factors influencing fatigue damage in the knee, and also the shelf and in vivo oxidation processes in UHMWPE bearings, using FTIR spectroscopy,  uniaxial tensile testing,  and numerical modeling.  She has been the lead researcher and author of a number of recent studies on the in vivo performance of UHMWPE bearings.

  • Bachelor of Science, Rice University, 1978
  • Master of Chemical Engineering, Rice University, 1979


                                                                            John H. Currier, MS   


John began his association with Dr. John Collier and his early work on hip prostheses in 1979. After spending a number of years working in both production and research for the petroleum industry,  he returned to Dartmouth Biomedical Engineering Center in 1994.  He has been involved in the study of polyethylene bearings in hip and knee prostheses.  Current research work is focused on investigating wear and  damage in knee bearings,  the shelf and in vivo oxidation processes in UHMWPE components,  and the performance of ceramic hip bearings.

  • Bachelor of Arts, Dartmouth College, 1979
  • Bachelor of Engineering, Thayer School of Engineering, 1981
  • Master of Science, Thayer School of Engineering, 1981

                                 Laboratory Manager


                                                                          Kori C Jevsevar, BS



                Graduate Students and Alumni/ae


                                                                          Michael A. Kokko, MS   


Mike  comes  to  DBEC  with  a  background  in electromechanical system development and interests that include surgical  device  design, state estimation,  and control systems.  He  previously led a variety of engineering efforts at Simbex  (Lebanon,  NH)  and designed novel robotic systems at Vecna Technologies (Cambridge, MA). Mike holds degrees in mechanical engineering from RPI (BS, 2005) and MIT (MS, 2007). When not at school, Mike enjoys running, hiking, nordic skiing, and other outdoor adventures with his wife and puppy.

  • Bachelor of Science in Mechanical Engineering, Rensselaer Polytechnic Institute, 2005
  • Master of Science, Massachusetts Institute of Technology, 2007

                                                                          Hannah M. Grover, BS     


Hannah arrived at DBEC from the University of Maine with a degree in Bioengineering and a minor in Mechanical Engineering (BS, 2016). She  is  currently  collaborating   with   The  University  of  New  Hampshire  via  the  New  Hampshire  BioMade  (EPSCoR) grant,  studying processing methods of ultra-high molecular weight polyethylene (UHMWPE) to improve its mechanical and wear properties. When not at the office, Hannah enjoys hiking, being on the water, and cooking in her free time.

  • Bachelor of Science in Bioengineering, University of Maine, 2016


                                                                             Peder Solberg, BS     


Peder  is  a  student  in the Surgical Innovation track of the PhD Innovation program in the Thayer School of Engineering.  Originally from Minnesota,  he  comes  to  DBEC  directly  following undergraduate study in mechanical engineering at South Dakota State University (BS, 2019).  He  comes  in  with  internship  experiences  at  3M Health Care, Mayo Clinic’s Motion Analysis Lab, and humanitarian engineering work with Resource Exchange International in Indonesia. Peder enjoys running, mountain biking, and Nordic skiing in his free time.

  • Bachelor of Science in Mechanical Engineering, South Dakota State University, 2019

       Alumni/ae, Laboratory Role (Post-DBEC Placement)

                                     Graduate Degree(s) Earned in the Laboratory and Laboratory Staff


  • Fioleda Prifti, PhD (Executive Director of Engineering Entrepreneurship, Duke University)
  • Audrey Martin, PhD (Industry, WL Gore and Associates Inc.)
  • Ryan Chapman, PhD (Postdoctoral Research Associate, Thayer School of Engineering at Dartmouth College)
  • Rebecca Butler, Laboratory Manager (Medical Student, University of Minnesota Medical School)


  • Lindsay Holdcroft, Laboratory Manager (Medical Student, Geisel School of Medicine at Dartmouth College)
  • Kathleen Lewicki, PhD (Industry, Regeneron Pharmaceuticals)
  • Shailly Jariwala, TREAT Fellow and Research Associate (Assistant Professor, Uniformed Services University of Health Sciences)



  • Steven Reinitz, PhD, Innovation Certificate (Industry, Boston Scientific)
  • Tanille Paniogue, MS (Veterinary School Student, Utah State University School of Veterinary Medicine)
  • Ben Cunkelman, MS (Industry, Abiomed)







  • Jon Kittredge, MS (Surgeon, Prima-CARE Medical Center)
  • Sara Atwood, MS (Associate Professor of Engineering, Elizabethtown College)