Trigg McClellan, MD
HS Clinical Professor
Orthopaedic Surgery
School of Medicine

Following two years of general surgery residency at Vanderbilt, Dr. McClellan completed his residency in orthopaedic surgery at the University of Michigan and received advanced fellowship training in orthopaedic traumatology at San Francisco General Hospital and the University of California, San Francisco. He completed a spine fellowship at the Kerlan-Jobe Orthopaedic Clinic in Los Angeles, California. Dr. McClellan is a Clinical Professor of Orthopaedic Surgery at the University of California, San Francisco and the co-director of the orthopaedic spine service at San Francisco General Hospital. He has also been instrumental in developing the orthopaedic trauma program at Regional Medical Center of San Jose. Dr. McClellan is a Fellow of the American Academy of Orthopaedic Surgeons, member of the Orthopaedic Trauma Association, Orthopaedic Research Society, North American Spine Society, American Spinal Injury Association, Societe Internationale de Chirurgie Orthopedique et de Traumatologie (SICOT), International Society for the Advancement of Spine Surgery and AO Spine. Dr. McClellan is committed to providing the highest quality of patient care, resident education and medical research. He is the proud father of two daughters and established the nation’s top graduate medical education fellowship in their honor with the UCSF Institute for Global Orthopaedics and Traumatology. The Morgan and Madison McClellan International Research Fellowship was established for third and fourth year medical students interested in orthopaedic surgery and global health.

• Anterior corpectomy via the mini-open, extreme lateral, transpsoas approach combined with short-segment posterior fixation for single-level traumatic lumbar burst fractures: analysis of health-related quality of life outcomes and patient satisfaction.
  Journal of neurosurgery. Spine 2015 Theologis AA, Tabaraee E, Toogood P, Kennedy A, Birk H, McClellan RT, Pekmezci M
• Cervical spine clearance protocols in Level I, II, and III trauma centers in California.
  The spine journal : official journal of the North American Spine Society 2014 Pekmezci M, Theologis AA, Dionisio R, Mackersie R, McClellan RT
• Cervical spine clearance protocols in level 1 trauma centers in the United States.
  Spine 2014 Theologis AA, Dionisio R, Mackersie R, McClellan RT, Pekmezci M
• Allogeneic morphogenetic protein vs. recombinant human bone morphogenetic protein-2 in lumbar interbody fusion procedures: a radiographic and economic analysis.
  Journal of orthopaedic surgery and research 2013 Roh JS, Yeung CA, Field JS, McClellan RT
• MRI issues for ballistic objects: information obtained at 1.5-, 3- and 7-Tesla.
  The spine journal : official journal of the North American Spine Society 2013 Dedini RD, Karacozoff AM, Shellock FG, Xu D, McClellan RT, Pekmezci M
• The variable angle hip fracture nail relative to the gamma 3: a finite element analysis illustrating the same stiffness and fatigue characteristics.
  Advances in orthopedics 2013 Matityahu A, Schmidt AH, Grantz A, Clawson B, Marmor M, McClellan RT
• Construct Rigidity after Fatigue Loading in Pedicle Subtraction Osteotomy with or without Adjacent Interbody Structural Cages.
  Global spine journal 2012 Deviren V, Tang JA, Scheer JK, Buckley JM, Pekmezci M, McClellan RT, Ames CP
• Advances in biomaterials and surface technologies.
  Journal of orthopaedic trauma 2012 Richards RG, Moriarty TF, Miclau T, McClellan RT, Grainger DW
• Comparison of expandable and fixed interbody cages in a human cadaver corpectomy model, part I: endplate force characteristics.
  Journal of neurosurgery. Spine 2012 Pekmezci M, Tang JA, Cheng L, Modak A, McClellan RT, Buckley JM, Ames CP
• Accuracy of in situ neck-shaft angle and shortening measurements of the anatomically reduced, varus malreduced and shortened proximal femur: can we believe what we see on the postoperative films?
  Injury 2011 Marmor M, Nystuen C, Ehemer N, McClellan RT, Matityahu A
• Biomechanical analysis of revision strategies for rod fracture in pedicle subtraction osteotomy.
  Neurosurgery 2011 Scheer JK, Tang JA, Deviren V, Buckley JM, Pekmezci M, McClellan RT, Ames CP
• Biomechanical analysis of osteotomy type and rod diameter for treatment of cervicothoracic kyphosis.
  Spine 2011 Scheer JK, Tang JA, Buckley JM, Deviren V, Pekmezci M, McClellan RT, Ames CP
• Tibial plateau fracture repairs augmented with calcium phosphate cement have higher in situ fatigue strength than those with autograft.
  Journal of orthopaedic trauma 2011 McDonald E, Chu T, Tufaga M, Marmor M, Singh R, Yetkinler D, Matityahu A, Buckley JM, McClellan RT
• Biomechanical analysis of cervicothoracic junction osteotomy in cadaveric model of ankylosing spondylitis: effect of rod material and diameter.
  Journal of neurosurgery. Spine 2011 Scheer JK, Tang JA, Deviren V, Acosta F, Buckley JM, Pekmezci M, McClellan RT, Ames CP
• Optimal reconstruction technique after C-2 corpectomy and spondylectomy: a biomechanical analysis.
  Journal of neurosurgery. Spine 2010 Scheer JK, Tang J, Eguizabal J, Farin A, Buckley JM, Deviren V, McClellan RT, Ames CP
• Biomechanical comparison of conventional open reduction and internal fixation versus calcium phosphate cement fixation of a central depressed tibial plateau fracture.
  Journal of orthopaedic trauma 2001 Yetkinler DN, McClellan RT, Reindel ES, Carter D, Poser RD
• Stability of open-book pelvic fractures using a new biomechanical model of single-limb stance.
  Journal of orthopaedic trauma 1997 MacAvoy MC, McClellan RT, Goodman SB, Chien CR, Allen WA, van der Meulen MC
• Pudendal nerve palsy after femoral intramedullary nailing.
  Journal of orthopaedic trauma 1993 Kao JT, Burton D, Comstock C, McClellan RT, Carragee E