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Donald B Longjohn, MD

Title(s)Assistant Professor of Clinical Orthopaedic Surgery
AddressHC2 - 1520 San Pablo Street, #2000
Health Sciences Campus
Los Angeles CA 90033
Phone+1 323 442 5860
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    Los Angeles Magazine2016  - 2018Super Doctor
    Castle Connolly2016Amreica's Top Doctors

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    Dr. Longjohn is an assistant professor in the Department of Orthopaedic Surgery at the Keck School of Medicine of USC. He specializes in hip and knee replacement/revision surgery, as well as arthritis, rheumatoid arthritis, osteoarthritis and arthroscopic surgery. In addition to his membership in professional organizations such as American Association of Hip and Knee Surgeons and the Western Orthopaedic Association, Dr. Longjohn is a member of the LA County Sheriff’s Department Medical Reserve Company 206 (Office of Homeland Security) and also volunteers as a flight physician for the LA County Sheriff’s Department Air Rescue 5. Dr. Longjohn has been honored with several teaching awards. His current research focus is on clinical and biomechanical studies relating to joint replacement and arthroplasty revision techniques and materials. Dr. Longjohn did his residency in orthopaedic surgery at USC+LAC and completed a fellowship in arthritis and joint implant surgery at Rancho Los Amigos National Rehabilitation Center/Keck Hospital of USC.

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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. Regional gene therapy for bone healing using a 3D printed scaffold in a rat femoral defect model. J Biomed Mater Res A. 2021 May 21. Kang HP, Ihn H, Robertson DM, Chen X, Sugiyama O, Tang A, Hollis R, Skorka T, Longjohn D, Oakes D, Shah R, Kohn D, Jakus AE, Lieberman JR. PMID: 34018305.
      View in: PubMed   Mentions:    Fields:    
    2. Regional Gene Therapy with Transduced Human Cells: The Influence of "Cell Dose" on Bone Repair. Tissue Eng Part A. 2021 Apr 21. Ihn H, Kang H, Iglesias B, Sugiyama O, Tang A, Hollis R, Bougioukli S, Skorka T, Park S, Longjohn D, Oakes D, Kohn D, Lieberman JR. PMID: 33882718.
      View in: PubMed   Mentions:    Fields:    
    3. Anterior Total Hip Arthroplasty With Bulk Femoral Head Autograft in a Patient With Camurati-Engelmann Disease. Arthroplast Today. 2021 Apr; 8:204-210. Taylor AJ, Runner RP, Longjohn DB, Najibi S. PMID: 33937459.
      View in: PubMed   Mentions:
    4. Limited potential of AAV-mediated gene therapy in transducing human mesenchymal stem cells for bone repair applications. Gene Ther. 2020 Aug 17. Bougioukli S, Chateau M, Morales H, Vakhshori V, Sugiyama O, Oakes D, Longjohn D, Cannon P, Lieberman JR. PMID: 32807899.
      View in: PubMed   Mentions:    Fields:    
    5. Periprosthetic femoral bone loss in total hip arthroplasty: systematic analysis of the effect of stem design. Hip Int. 2017 Feb 21; 27(1):26-34. Knutsen AR, Lau N, Longjohn DB, Ebramzadeh E, Sangiorgio SN. PMID: 27515762.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    6. Systematic analysis of bisphosphonate intervention on periprosthetic BMD as a function of stem design. J Arthroplasty. 2014 Jun; 29(6):1292-7. Knusten AR, Ebramzadeh E, Longjohn DB, Sangiorgio SN. PMID: 24703781.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    7. Challenges in relating experimental hip implant fixation predictions to clinical observations. J Biomech. 2011 Jan 11; 44(2):235-43. Sangiorgio SN, Longjohn DB, Dorr LD, Ebramzadeh E. PMID: 21040920.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    8. The influence of proximal stem geometry and surface finish on the fixation of a double-tapered cemented femoral stem. J Biomech. 2011 Jan 04; 44(1):22-7. Sangiorgio SN, Longjohn DB, Dorr LD, Ebramzadeh E. PMID: 20828697.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    9. Simulation of extreme loads on the proximal femur for implant fixation assessment. J Appl Biomater Biomech. 2008 May-Aug; 6(2):72-80. Sangiorgio SN, Longjohn DB, Lee JL, Alexander JD, Dorr LD, Ebramzadeh E. PMID: 20740449.
      View in: PubMed   Mentions:    Fields:    
    10. Effects of dorsal flanges on fixation of a cemented total hip replacement femoral stem. J Bone Joint Surg Am. 2004 Apr; 86(4):813-20. Sangiorgio SN, Ebramzadeh E, Longjohn DB, Dorr LD. PMID: 15069149.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    11. Initial stability of cemented femoral stems as a function of surface finish, collar, and stem size. J Bone Joint Surg Am. 2004 Jan; 86(1):106-15. Ebramzadeh E, Sangiorgio SN, Longjohn DB, Buhari CF, Dorr LD. PMID: 14711952.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    12. Effects of total hip arthroplasty cemented femoral stem surface finish, collar and cement thickness on load transfer to the femur. J Appl Biomater Biomech. 2003 Jan-Apr; 1(1):76-83. Ebramzadeh E, Sangiorgio SN, Longjohn DB, Buhari CF, Morrison BJ, Dorr LD. PMID: 20803475.
      View in: PubMed   Mentions: 1     Fields:    
    13. Polyethylene liner cementation into fixed acetabular shells. J Arthroplasty. 2002 Jun; 17(4 Suppl 1):167-70. Haft GF, Heiner AD, Callaghan JJ, Dorr LD, Wan Z, Long W, Longjohn DB, Brown TD. PMID: 12068431.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    14. Technical factors for success with metal ring acetabular reconstruction. J Arthroplasty. 2001 Dec; 16(8):961-9. Udomkiat P, Dorr LD, Won YY, Longjohn D, Wan Z. PMID: 11740749.
      View in: PubMed   Mentions: 18     Fields:    Translation:Humans
    15. Radiographic comparison of diaphyseal grit blasted with smooth surface stems by matched pair analysis. Clin Orthop Relat Res. 2000 Dec; (381):156-67. Min B, Longjohn DB, Dorr LD, Wan Z. PMID: 11127652.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    16. Total hip arthroplasty with use of the Metasul metal-on-metal articulation. Four to seven-year results. J Bone Joint Surg Am. 2000 Jun; 82(6):789-98. Dorr LD, Wan Z, Longjohn DB, Dubois B, Murken R. PMID: 10859098.
      View in: PubMed   Mentions: 27     Fields:    Translation:Humans
    17. Blood management challenges in revision hip arthroplasty. Orthopedics. 1999 Jan; 22(1 Suppl):s148-50. Longjohn DB, Dorr LD, McPherson EJ. PMID: 9927117.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    18. Soft tissue balance of the hip. J Arthroplasty. 1998 Jan; 13(1):97-100. Longjohn D, Dorr LD. PMID: 9493545.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    19. Acute hematogenous osteomyelitis of the epiphysis. Clin Orthop Relat Res. 1995 Jul; (316):227-34. Longjohn DB, Zionts LE, Stott NS. PMID: 7634711.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
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