People

Faculty

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

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

Rebecca D. Butler, MS

Rebecca joined the Dartmouth Biomedical Engineering Center in June 2017 and has assumed the role of lab manager. Her work involves administration of the retrievals program, including evaluations of retrieved devices with Dr. Michael Mayor. Her active research interests include chemical changes in marketed polymers, metal-on-metal damage and wear in hip bearings, and techniques for measuring wear in polymers.  Rebecca's research also spans to the impedance properties of human tissue in a shared appointment with Professor Ryan Halter.

  • Bachelor of Arts, Dartmouth College, 2015
  • Bachelor of Engineering, Thayer School of Engineering, 2016
  • Master of Science, Thayer School of Engineering, 2017