Alekos Theologis, MD

Title(s)Assistant Professor, Orthopaedic Surgery
SchoolSchool of Medicine
Address1500 Owens Street, #123
San Francisco CA 94158
ORCID ORCID Icon0000-0003-1526-0000 Additional info
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    Collapse Biography 
    Collapse Education and Training
    Stanford University, Stanford, CA BS2007Biological Sciences, Chemistry
    University of California San Francisco, San FranciscoM.D.2011
    University of California San Francisco, San FranciscoResidency2017Orthopaedic Surgery
    Washington University, St. LouisFellowship2018Spine
    Collapse Awards and Honors
    California Orthopaedic Association's J. Harold LaBriola, M.D. Resident Award
    Northern California Orthopaedic Society's Resident Research Award
    2014 Most Outstanding Paper Award from The Spine Journal
    UCSF Clinical & Translational Science Institute's Outstanding Resident Research Award

    Collapse Overview 
    Collapse Overview
    As a member of the UCSF Spine Center, Dr. Alekos Theologis, MD, is a American Board of Orthopaedic Surgery (ABOS) certified orthopaedic surgeon who specializes in the treatment of a wide-range of complex primary and revision spinal disorders for both children and adults, which include cervical myelopathy, cervicothoracic kyphosis, adult scoliosis, lumbar stenosis, spondylolisthesis, failed back syndrome, and tumors. Providing passionate and comprehensive patient care, Dr. Theologis actively engages in the development of new technologies, clinical and biomechanical research, and the latest advancements in perioperative pain management and surgical reconstruction.

    Dr. Theologis’ research interests include: perioperative management and risk assessment, revision surgery and the management of complications after spine surgery, health policy, global health, and educating the next generation of medical students and residents.

    Dr. Theologis graduated with a B.S. in Biological Sciences and Chemistry from Stanford University. He attended medical school at the University of California - San Francisco, where he also completed his residency in the Department of Orthopaedic Surgery, serving as chief resident in his final year.

    During this time, Dr. Theologis received local and national awards for research including: the J. Harold LaBriola, M.D. Resident Award for the most outstanding resident paper in orthopaedic research; the Northern California Orthopaedic Society Resident Research Award for best clinical paper; the 2014 Most Outstanding Paper in The Spine Journal; and the UCSF CTSI Outstanding Resident Research Award. Dr. Theologis also completed a Health Volunteers Overseas Orthopaedics Traveling Fellowship in Ghana during which he trained surgeons and operated on patients with severe spinal deformities.

    Following his residency at UCSF, Dr. Theologis completed one of the most prestigious adult and pediatric clinical fellowships in spine surgery at Washington University in St. Louis during which he trained broadly and comprehensively under the tutelage of neurosurgeons and orthopaedic surgeons.

    Dr. Theologis’ clinics will be at four locations: the UCSF Spine Center on the Parnassus Campus, the UCSF Orthopedic Institute and the Helen Diller Family Comprehensive Cancer Center, both state-of- the-art facilities located at the UCSF Mission Bay campus in San Francisco, and the UCSF Berkeley Outpatient Clinic in Berkeley.

    For more information or to make an appointment: 415-353-2739.

    Collapse Bibliographic 
    Collapse Publications
    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. Mechanical complications and patient-reported outcome measures associated with high pelvic incidence and persistent pelvic retroversion: the Roussouly "false type 2" profile. J Neurosurg Spine. 2023 May 12; 1-6. Lertudomphonwanit T, Gupta MC, Theologis AA, Jauregui JJ, Lenke LG, Bridwell KH, Wondra JP, Kelly MP. PMID: 37178020.
      View in: PubMed   Mentions:    Fields:    
    2. Computer-assisted Navigation in Lumbar Spine Instrumented Fusions: Comparison of In-hospital and 30-Day Postoperative Complications With Nonnavigated Fusions in a National Database. J Am Acad Orthop Surg. 2023 May 01. Sing D, Cummins DD, Burch S, Theologis AA. PMID: 37130368.
      View in: PubMed   Mentions:    Fields:    
    3. Influence of Preoperative T1-Slope and Cervical Sagittal Vertical Axis on Postoperative Cervical Sagittal Alignment Following Posterior Cervical Laminoplasty. Int J Spine Surg. 2023 Apr; 17(2):276-280. Bhat N, Burch S, Tay B, Berven SH, Deviren V, Theologis AA. PMID: 36889903.
      View in: PubMed   Mentions:
    4. Preoperative medical assessment for adult spinal deformity surgery: a state-of-the-art review. Spine Deform. 2023 Feb 22. Arora A, Cummins DD, Wague A, Mendelis J, Samtani R, McNeill I, Theologis AA, Mummaneni PV, Berven S. PMID: 36811703.
      View in: PubMed   Mentions:    Fields:    
    5. Risk factors for extended length of stay and non-home discharge in adults treated with multi-level fusion for lumbar degenerative pathology and deformity. Spine Deform. 2023 May; 11(3):685-697. Arora A, Wague A, Srinivas R, Callahan M, Peterson TA, Theologis AA, Berven S. PMID: 36520257; PMCID: PMC10147745.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    6. Does number of rods matter? 4-, 5-, and 6-rods across a lumbar pedicle subtraction osteotomy: a finite element analysis. Spine Deform. 2023 May; 11(3):535-543. Shekouhi N, Vosoughi AS, Goel VK, Theologis AA. PMID: 36484928; PMCID: PMC10147790.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    7. Predictive models to assess risk of extended length of stay in adults with spinal deformity and lumbar degenerative pathology: development and internal validation. Spine J. 2023 03; 23(3):457-466. Arora A, Demb J, Cummins DD, Callahan M, Clark AJ, Theologis AA. PMID: 36892060.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    8. Thoracic posterior spinal instrumented fusion vs. thoracic anterior spinal tethering for adolescent idiopathic scoliosis with a minimum of 2-year follow-up: a cost comparison of index and revision operations. Spine Deform. 2023 03; 11(2):359-366. Theologis AA, Wu HH, Diab M. PMID: 36131225.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    9. Development and internal validation of predictive models to assess risk of post-acute care facility discharge in adults undergoing multi-level instrumented fusions for lumbar degenerative pathology and spinal deformity. Spine Deform. 2023 01; 11(1):163-173. Arora A, Demb J, Cummins DD, Deviren V, Clark AJ, Ames CP, Theologis AA. PMID: 36125738; PMCID: PMC9768002.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    10. Radiographic comparison of L5-S1 lateral anterior lumbar interbody fusion cage subsidence and displacement by fixation strategy: anterior plate versus integrated screws. J Neurosurg Spine. 2023 01 01; 38(1):126-130. Theologis AA, Patel S, Burch S. PMID: 36057128.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    11. Biomechanical comparison of multi-rod constructs by satellite rod configurations (in-line vs. lateral) and screw types (monoaxial vs. polyaxial) spanning a lumbar pedicle subtraction osteotomy (PSO): is there an optimal configuration? Eur Spine J. 2022 11; 31(11):3050-3059. Shekouhi N, Vosoughi AS, Zavatsky JM, Goel VK, Theologis AA. PMID: 35932334.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    12. Proximal Junctional Spondylodiscitis Following Adult Spinal Deformity Surgery: Case Series and Review of the Literature. Int J Spine Surg. 2022 Jul 13. Mendelis JR, Hung NJ, Deviren V, Ames CP, Clark AJ, Theologis AA. PMID: 35831064.
      View in: PubMed   Mentions:
    13. Lidocaine Infusion for the Management of Postoperative Pain and Delirium (LIMPP): protocol for a randomised control trial. BMJ Open. 2022 06 06; 12(6):e059416. Buren MA, Theologis A, Zuraek A, Behrends M, Clark AJ, Leung JM. PMID: 35667730; PMCID: PMC9171272.
      View in: PubMed   Mentions:    Fields:    Translation:HumansCTClinical Trials
    14. Compensatory biomechanics and spinal loading during dynamic maneuvers in patients with chronic low back pain. Eur Spine J. 2022 07; 31(7):1889-1896. Nyayapati P, Booker J, Wu PI, Theologis A, Dziesinski L, O'Neill C, Zheng P, Lotz JC, Matthew RP, Bailey JF. PMID: 35604457; PMCID: PMC9252943.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    15. Survival of Patients With Primary Osseous Malignancies of the Mobile Spine Is Associated With Access to "Standard Treatment" Protocols. J Am Acad Orthop Surg. 2022 Sep 01; 30(17):841-850. Stroud SG, Geiger EJ, Lichtensztajn DY, Goldsby RE, Cheng I, Wustrack R, Theologis AA. PMID: 35507547.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    16. Economic Impact of Revision Operations for Adjacent Segment Disease of the Subaxial Cervical Spine. J Am Acad Orthop Surg Glob Res Rev. 2022 04 01; 6(4). Bonano J, Cummins DD, Burch S, Berven SH, Deviren V, Ames CP, Tay B, Clark AJ, Theologis AA. PMID: 35452424; PMCID: PMC9042582.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    17. 5-Year Revision Rates After Elective Multilevel Lumbar/Thoracolumbar Instrumented Fusions in Older Patients: An Analysis of State Databases. J Am Acad Orthop Surg. 2022 May 15; 30(10):476-483. Cummins DD, Callahan M, Scheffler A, Theologis AA. PMID: 35196291.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    18. Lower Neurological Risk with Anterior Operations Compared to Posterior Operations for Thoracic Disc Herniations: Analysis of 697 Patients. Spine (Phila Pa 1976). 2022 Feb 01; 47(3):E94-E100. Cummins D, Callahan M, Clark AJ, Theologis AA. PMID: 34381003.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    19. Rates and risk factors associated with 30- and 90-day readmissions and reoperations after spinal fusions for adult lumbar degenerative pathology and spinal deformity. Spine Deform. 2022 05; 10(3):625-637. Taliaferro K, Rao A, Theologis AA, Cummins D, Callahan M, Berven SH. PMID: 34846718.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    20. RAPT score and preoperative factors to predict discharge location following adult spinal deformity surgery. Spine Deform. 2022 05; 10(3):639-646. Cummins D, Georgiou S, Burch S, Tay B, Berven SH, Ames CP, Deviren V, Clark AJ, Theologis AA. PMID: 34773631.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    21. Spine Surgeons Social Dilemma: Benefits and Risks of Social Media for Spine Surgery Practice in the 21st Century. Global Spine J. 2021 Aug 03; 21925682211035716. Samtani RG, Webb A, Burleson J, Berven S, Theologis A, Abotsi E, Burch S, Deviren V, Haddas R. PMID: 34342239.
      View in: PubMed   Mentions: 2  
    22. Ureteral injury following anterior thoracolumbar spinal instrumented fusion for adolescent idiopathic scoliosis: a case report with CT angiography analysis of surgically relevant anatomy. Spine Deform. 2021 11; 9(6):1691-1698. Hung NJ, Theologis AA, Courtier JL, Harmon D, Diab M. PMID: 34075563.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    23. The role of the fractional lumbosacral curve in persistent coronal malalignment following adult thoracolumbar deformity surgery: a radiographic analysis. Spine Deform. 2021 05; 9(3):721-731. Theologis AA, Lertudomphonwanit T, Lenke LG, Bridwell KH, Gupta MC. PMID: 33651338.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    24. Reoperation and Mortality Rates Following Elective 1 to 2 Level Lumbar Fusion: A Large State Database Analysis. Global Spine J. 2022 Oct; 12(8):1708-1714. Cummins D, Hindoyan K, Wu HH, Theologis AA, Callahan M, Tay B, Berven S. PMID: 33472423; PMCID: PMC9609528.
      View in: PubMed   Mentions:
    25. Costs and utility of post-discharge acute inpatient rehabilitation following adult spinal deformity surgery. Spine Deform. 2021 05; 9(3):817-822. Theologis AA, Lau D, Dalle-Ore C, Tsu A, Deviren V, Ames CP. PMID: 33400227.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    26. Thoracolumbar Junction Orientation: A Novel Guide for Sagittal Correction and Proximal Junctional Kyphosis Prediction in Adult Spinal Deformity Patients. Neurosurgery. 2020 12 15; 88(1):55-62. Moon HJ, Bridwell KH, Theologis AA, Kelly MP, Lertudomphonwanit T, Lenke LG, Gupta MC. PMID: 32761200.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    27. The "Rail Technique" for Correction of Cervicothoracic Kyphosis: Case Report and Surgical Technique Description. Neurospine. 2020 Sep; 17(3):652-658. Theologis AA, Gupta MC. PMID: 33022170; PMCID: PMC7538351.
      View in: PubMed   Mentions:
    28. Relationship of the character of rod fractures on outcomes following long thoracolumbar fusion to the sacrum for adult spinal deformity. Spine J. 2020 09; 20(9):1452-1463. Lertudomphonwanit T, Bridwell KH, Kelly MP, Punyarat P, Theologis A, Sides BA, Gupta MC. PMID: 32502653.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    29. Intervertebral disc herniation effects on multifidus muscle composition and resident stem cell populations. JOR Spine. 2020 Jun; 3(2):e1091. Agha O, Mueller-Immergluck A, Liu M, Zhang H, Theologis AA, Clark A, Kim HT, Liu X, Feeley BT, Bailey JF. PMID: 32613166; PMCID: PMC7323461.
      View in: PubMed   Mentions: 6  
    30. Readmission in elective spine surgery: Will short stays be beneficial to patients. J Clin Neurosci. 2020 Aug; 78:170-174. Brown AE, Saleh H, Naessig S, Pierce KE, Ahmad W, Bortz CA, Alas H, Chern I, Vasquez-Montes D, Ihejirika RC, Segreto FA, Haskel J, Kaplan DJ, Diebo BG, Gerling MC, Paulino CB, Theologis A, Lafage V, Janjua MB, Passias PG. PMID: 32360160.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    31. Improvements in Neck Pain and Disability Following C1-C2 Posterior Cervical Instrumentation and Fusion for Atlanto-Axial Osteoarthritis. World Neurosurg. 2020 07; 139:e496-e500. Adogwa O, Buchowski JM, Sielatycki JA, Shlykov MA, Theologis AA, Lin J, CreveCoeur T, Peters C, Riew KD. PMID: 32311554.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    32. Normative Data of Pulmonary Function Tests and Radiographic Measures of Chest Development in Children Without Spinal Deformity: Is a T1-T12 Height of 22 cm Adequate? Spine Deform. 2019 11; 7(6):857-864. Theologis AA, Smith J, Kerstein M, Gregory JR, Luhmann SJ. PMID: 31731994.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    33. Thoracolumbar junction orientation: its impact on thoracic kyphosis and sagittal alignment in both asymptomatic volunteers and symptomatic patients. Eur Spine J. 2019 Sep; 28(9):1937-1947. Moon HJ, Bridwell KH, Theologis AA, Kelly MP, Lertudomphonwanit T, Kim HJ, Lenke LG, Gupta MC. PMID: 31342155.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    34. Cervical and Cervicothoracic Sagittal Alignment According to Roussouly Thoracolumbar Subtypes. Spine (Phila Pa 1976). 2019 Jun 01; 44(11):E634-E639. Theologis AA, Iyer S, Lenke LG, Sides BA, Kim HJ, Kelly MP. PMID: 30475347.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    35. Cellular biology of fracture healing. J Orthop Res. 2019 01; 37(1):35-50. Bahney CS, Zondervan RL, Allison P, Theologis A, Ashley JW, Ahn J, Miclau T, Marcucio RS, Hankenson KD. PMID: 30370699; PMCID: PMC6542569.
      View in: PubMed   Mentions: 119     Fields:    Translation:HumansAnimalsCells
    36. Placement of iliosacral screws using 3D image-guided (O-Arm) technology and Stealth Navigation: comparison with traditional fluoroscopy. Bone Joint J. 2016 May; 98-B(5):696-702. Theologis AA, Burch S, Pekmezci M. PMID: 27143744.
      View in: PubMed   Mentions: 16     Fields:    Translation:Humans
    37. When do anterior external or internal fixators provide additional stability in an unstable (Tile C) pelvic fracture? A biomechanical study. Eur J Trauma Emerg Surg. 2015 Dec; 41(6):665-71. Mcdonald E, Theologis AA, Horst P, Kandemir U, Pekmezci M. PMID: 26038006.
      View in: PubMed   Mentions: 17     Fields:    Translation:Humans
    38. Luteinizing hormone-dependent activation of the epidermal growth factor network is essential for ovulation. Mol Cell Biol. 2007 Mar; 27(5):1914-24. Hsieh M, Lee D, Panigone S, Horner K, Chen R, Theologis A, Lee DC, Threadgill DW, Conti M. PMID: 17194751; PMCID: PMC1820474.
      View in: PubMed   Mentions: 139     Fields:    Translation:AnimalsCells
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