Trigg McClellan, MD

Title(s)Professor, Orthopaedic Surgery
SchoolSchool of Medicine
Address1001 Potrero Ave, #237
San Francisco CA 94110
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    University of California, San Francisco, CA2018Diversity, Equity, and Inclusion Champion Training

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    R. TRIGG MCCLELLAN, M.D. earned both a bachelor’s degree in physics and a medical degree from Vanderbilt University in Nashville, Tennessee. 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.
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Timelines for Return to Different Sports Types After Eight Cervical Spine Fractures in Recreational and Elite Athletes: A Survey of the Association for Collaborative Spine Research. Clin Spine Surg. 2024 Mar 25. Hung NJ, McClellan RT, Hsu W, Hu SS, Clark AJ, Theologis AA. PMID: 38531829.
      View in: PubMed   Mentions:    Fields:    
    2. Use of Osteobiologics for Fracture Management: The When, What, and How. Injury. 2021 Jun; 52 Suppl 2:S35-S43. Marmor MT, Matz J, McClellan RT, Medam R, Miclau T. PMID: 33549314.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    3. Comparison of Expandable and Fixed Interbody Cages in a Human Cadaver Corpectomy Model: Fatigue Characteristics. Clin Spine Surg. 2016 11; 29(9):387-393. Pekmezci M, Tang JA, Cheng L, Modak A, McClellan RT, Buckley JM, Ames CP. PMID: 22925989.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    4. Multilevel Corpectomy With Anterior Column Reconstruction and Plating for Subaxial Cervical Osteomyelitis. Spine (Phila Pa 1976). 2016 Sep 15; 41(18):E1088-E1095. Theologis AA, Lansdown D, McClellan RT, Chou D, Pekmezci M. PMID: 26974830.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    5. Integrity of Damage Control Posterior Spinal Fusion Constructs for Patients With Polytrauma: A Biomechanical Investigation. Spine (Phila Pa 1976). 2015 Dec; 40(23):E1219-25. Pekmezci M, Herfat S, Theologis AA, Viscogliosi P, Demirkiran G, McClellan RT, Ames C. PMID: 26192728.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    6. 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. J Neurosurg Spine. 2016 Jan; 24(1):60-8. Theologis AA, Tabaraee E, Toogood P, Kennedy A, Birk H, McClellan RT, Pekmezci M. PMID: 26431072.
      View in: PubMed   Mentions: 16     Fields:    Translation:Humans
    7. Cervical spine clearance protocols in Level I, II, and III trauma centers in California. Spine J. 2015 Mar 01; 15(3):398-404. Pekmezci M, Theologis AA, Dionisio R, Mackersie R, McClellan RT. PMID: 25546512.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    8. Cervical spine clearance protocols in level 1 trauma centers in the United States. Spine (Phila Pa 1976). 2014 Mar 01; 39(5):356-61. Theologis AA, Dionisio R, Mackersie R, McClellan RT, Pekmezci M. PMID: 24299717.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    9. Allogeneic morphogenetic protein vs. recombinant human bone morphogenetic protein-2 in lumbar interbody fusion procedures: a radiographic and economic analysis. J Orthop Surg Res. 2013 Dec 28; 8:49. Roh JS, Yeung CA, Field JS, McClellan RT. PMID: 24373225; PMCID: PMC3916062.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    10. MRI issues for ballistic objects: information obtained at 1.5-, 3- and 7-Tesla. Spine J. 2013 Jul; 13(7):815-22. Dedini RD, Karacozoff AM, Shellock FG, Xu D, McClellan RT, Pekmezci M. PMID: 23562330.
      View in: PubMed   Mentions: 14     Fields:    Translation:Humans
    11. The variable angle hip fracture nail relative to the gamma 3: a finite element analysis illustrating the same stiffness and fatigue characteristics. Adv Orthop. 2013; 2013:143801. Matityahu A, Schmidt AH, Grantz A, Clawson B, Marmor M, McClellan RT. PMID: 23585970; PMCID: PMC3622371.
      View in: PubMed   Mentions:
    12. Construct Rigidity after Fatigue Loading in Pedicle Subtraction Osteotomy with or without Adjacent Interbody Structural Cages. Global Spine J. 2012 Dec; 2(4):213-20. Deviren V, Tang JA, Scheer JK, Buckley JM, Pekmezci M, McClellan RT, Ames CP. PMID: 24353970; PMCID: PMC3864425.
      View in: PubMed   Mentions: 14  
    13. Advances in biomaterials and surface technologies. J Orthop Trauma. 2012 Dec; 26(12):703-7. Richards RG, Moriarty TF, Miclau T, McClellan RT, Grainger DW. PMID: 22913967.
      View in: PubMed   Mentions: 6     Fields:    
    14. Comparison of expandable and fixed interbody cages in a human cadaver corpectomy model, part I: endplate force characteristics. J Neurosurg Spine. 2012 Oct; 17(4):321-6. Pekmezci M, Tang JA, Cheng L, Modak A, McClellan RT, Buckley JM, Ames CP. PMID: 22900505.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    15. 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. 2012 Jun; 43(6):846-9. Marmor M, Nystuen C, Ehemer N, McClellan RT, Matityahu A. PMID: 22040694.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    16. Biomechanical analysis of revision strategies for rod fracture in pedicle subtraction osteotomy. Neurosurgery. 2011 Jul; 69(1):164-72; discussion 172. Scheer JK, Tang JA, Deviren V, Buckley JM, Pekmezci M, McClellan RT, Ames CP. PMID: 21336218.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    17. Biomechanical analysis of osteotomy type and rod diameter for treatment of cervicothoracic kyphosis. Spine (Phila Pa 1976). 2011 Apr 15; 36(8):E519-23. Scheer JK, Tang JA, Buckley JM, Deviren V, Pekmezci M, McClellan RT, Ames CP. PMID: 21245784.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    18. Tibial plateau fracture repairs augmented with calcium phosphate cement have higher in situ fatigue strength than those with autograft. J Orthop Trauma. 2011 Feb; 25(2):90-5. McDonald E, Chu T, Tufaga M, Marmor M, Singh R, Yetkinler D, Matityahu A, Buckley JM, McClellan RT. PMID: 21245711.
      View in: PubMed   Mentions: 15     Fields:    Translation:Humans
    19. Biomechanical analysis of cervicothoracic junction osteotomy in cadaveric model of ankylosing spondylitis: effect of rod material and diameter. J Neurosurg Spine. 2011 Mar; 14(3):330-5. Scheer JK, Tang JA, Deviren V, Acosta F, Buckley JM, Pekmezci M, McClellan RT, Ames CP. PMID: 21235305.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    20. Optimal reconstruction technique after C-2 corpectomy and spondylectomy: a biomechanical analysis. J Neurosurg Spine. 2010 May; 12(5):517-24. Scheer JK, Tang J, Eguizabal J, Farin A, Buckley JM, Deviren V, McClellan RT, Ames CP. PMID: 20441484.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    21. Biomechanical comparison of conventional open reduction and internal fixation versus calcium phosphate cement fixation of a central depressed tibial plateau fracture. J Orthop Trauma. 2001 Mar-Apr; 15(3):197-206. Yetkinler DN, McClellan RT, Reindel ES, Carter D, Poser RD. PMID: 11265011.
      View in: PubMed   Mentions: 13     Fields:    Translation:Humans
    22. Stability of open-book pelvic fractures using a new biomechanical model of single-limb stance. J Orthop Trauma. 1997 Nov; 11(8):590-3. MacAvoy MC, McClellan RT, Goodman SB, Chien CR, Allen WA, van der Meulen MC. PMID: 9415866.
      View in: PubMed   Mentions: 15     Fields:    Translation:Humans
    23. Pudendal nerve palsy after femoral intramedullary nailing. J Orthop Trauma. 1993; 7(1):58-63. Kao JT, Burton D, Comstock C, McClellan RT, Carragee E. PMID: 8433201.
      View in: PubMed   Mentions: 13     Fields:    Translation:Humans
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