Christopher P. Ames MD

Christopher Ames MD

Professor of Clinical Neurological Surgery and Orthopaedic Surgery

Director of Spine Tumor & Spinal Deformity Surgery

Co-director, Spinal Surgery and UCSF Spine Center

Director, Spinal Biomechanics Laboratory


Dr. Ames is the director of spinal deformity and spine tumor surgery and co-director of the combined high risk spine service, the Neurospinal Disorders Program, and the UCSF Spine Center. He is board certified in neurosurgery. He was named to the 2015 and 2016 Top Doctors lists in San Francisco Magazine, and among America’s Top Doctors for both neurosurgery and cancer from 2010 to 2016. His tumor practice focuses on en bloc tumor resection for chordoma, chondrosarcoma, giant cell tumor, soft tissue sarcoma, sacral tumors, and other primary and metastatic tumors. While at UCSF, Dr. Ames developed and published the transpedicular approach to previously unresectable cervical and cervical thoracic tumors.

Dr. Ames serves as the UCSF site director for the International Spinal Deformity Study Group and the AO Scoli-Risk Study. He also directs the neurosurgical spinal deformity service, which performs over 200 cases per year for correction of scoliosis, kyphosis, flat back, and chin-on-chest deformity in ankylosing spondylitis. His research work in spinal deformity has won the prestigious Hibbs award, as well as the Moe award, the Goldstein award, and Whitecloud awards from the Scoliosis Research Society. Dr Ames developed and published the first ever classification for cervical spine deformity and cervical osteotomy with the international spine study group.

He is internationally recognized for his work in spine tumor, deformity, and scoliosis and cervical kyphosis and has published over 300 peer-reviewed publications. He has been the honored international guest lecturer of the Australian Spine Society, the Argentine Spine Society, the Kuwait Neurosurgical Society, the Korean Spine Society, and the Asian Pacific Spine Society. He has served as chairman for over 40 national courses to teach advanced tumor and deformity techniques to neurosurgeons and orthopedic surgeons and has been visiting professor at Cedars Sanai, University of Southern California, and Massachusetts General Hospital.

In 2005, Dr. Ames was sought out by the NBC show "Three Wishes" to perform surgery for a patient with severe scoliosis. Although she had been previously told that she would remain permanently paralyzed, the operation allowed her to walk again. For more information, see the The Daily Star's report: Local Woman Gets Wish, Walks Again

Dr. Ames was also featured on abc 7 when he performed a ground-breaking surgery to remove a spinal cord tumor from a patient in Northern California. Read the story here.

 

Education, Training, and Previous Positions

1989: BA, Dartmouth College
1994: MD, University of California, Los Angeles
1994-1995: Surgical Internship, University of California, San Diego
1995-2000: Resident in Neurological Surgery, University of California, San Diego
2001-2002: Spine Fellow, Barrow Neurological Institute, Phoenix, Arizona
2002-Present: Department of Neurological Surgery, UCSF

Selected Professional Memberships and Appointments

The Cervical Spine Research Society
The International Society for Study of the Lumbar Spine (ISSLS)
Scoliosis Research Society – Research and Adult Deformity Committee
Spine Section Lead Editor, Operative Neurosurgery 

Selected Honors and Awards

2010-16: America's Top Surgeons, Castle Connolly
2010-16: America's Top Doctors for Cancer, Castle Connolly
2015-2016: Top Doctors, San Francisco Magazine
2013 Scoliosis Research Society Hibbs Award
2013 Scoliosis Research Society Moe Award
2013 Scoliosis Research Society Whitecloud Award
2015 Scoliosis Research Society Whitecloud Award
2015 Scoliosis Research Society Goldstein Award
2015: North American Spine Society Value Award
2015 Scoliosis Research Society Hibbs Award nominee
2016 Scoliosis Research Society Hibbs Award nominee
2016 Scoliosis Research Society Whitecloud Award nominee

Selected Recent Publications

Miller EK, Lenke LG, Neuman BJ, Sciubba DM, Kebaish KM, Smith JS, Qiu Y, Dahl BT, Pellisé F, Matsuyama Y, Carreon LY, Fehlings MG, Cheung KM, Lewis S, Dekutoski MB, Schwab FJ, Boachie-Adjei O, Mehdian H, Bess S, Shaffrey CI, Ames CP; AOSpine Knowledge Forum Deformity, the International Spine Study Group. External Validation of the Adult Spinal Deformity (ASD) Frailty Index (ASD-FI) in the Scoli-RISK-1 Patient Database. Spine (Phila Pa 1976). 2018 May 14. doi: 10.1097/BRS.0000000000002717. [Epub ahead of print] PubMed PMID: 29762340.

Mizutani J, Strom R, Abumi K, Endo K, Ishii K, Yagi M, Tay B, Deviren V, Ames C. How Cervical Reconstruction Surgery Affects Global Spinal Alignment. Neurosurgery. 2018 Apr 28. doi: 10.1093/neuros/nyy141. [Epub ahead of print] PubMed PMID: 29718359.

Safaee MM, Dalle Ore CL, Zygourakis CC, Deviren V, Ames CP. The unreimbursed costs of preventing revision surgery in adult spinal deformity: analysis of cost-effectiveness of proximal junctional failure prevention with ligament augmentation. Neurosurg Focus. 2018 May;44(5):E13. doi: 10.3171/2018.1.FOCUS17806. PubMed PMID: 29712521.

Ailon T, Hamilton DK, Klineberg E, Daniels AH, Lafage V, Bess S, Burton DC, Gupta M, Schwab F, Ames CP, Smith JS, Shaffrey CI, Hart RA; International Spine Study Group. Radiographic Fusion Grade Does Not Impact Health Related Quality of Life in the Absence of Instrumentation Failure for Patients Undergoing Posterior Instrumented Fusion for Adult Spinal Deformity. World Neurosurg. 2018 Apr 27. pii: S1878-8750(18)30847-7. doi: 10.1016/j.wneu.2018.04.127. [Epub ahead of print] PubMed PMID: 29709744.

Dalle Ore CL, Ames CP, Magill ST, Deviren V, Aghi MK, Lau D. Initial Experience with Intraoperative Phosphorous-32 Brachytherapy During Resection of Malignant Spinal Tumors. World Neurosurg. 2018 Apr 24. pii: S1878-8750(18)30825-8. doi: 10.1016/j.wneu.2018.04.105. [Epub ahead of print] PubMed PMID: 29702311.

Daniels AH, Bess S, Line B, Eltorai AEM, Reid DBC, Lafage V, Akbarnia BA, Ames CP, Boachie-Adjei O, Burton DC, Deviren V, Kim HJ, Hart RA, Kebaish KM, Klineberg EO, Gupta M, Mundis GM Jr, Hostin RA Jr, O'Brien M, Schwab FJ, Shaffrey CI, Smith JS; International Spine Study Group Foundation. Peak Timing for Complications After Adult Spinal Deformity Surgery. World Neurosurg. 2018 Apr 22. pii: S1878-8750(18)30803-9. doi: 10.1016/j.wneu.2018.04.084. [Epub ahead of print] PubMed PMID: 29689393.

Buell TJ, Buchholz AL, Quinn JC, Bess S, Line BG, Ames CP, Schwab FJ, Lafage V, Shaffrey CI, Smith JS. A Pilot Study on Posterior Polyethylene Tethers to Prevent Proximal Junctional Kyphosis After Multilevel Spinal Instrumentation for Adult Spinal Deformity. Oper Neurosurg (Hagerstown). 2018 Apr 24. doi: 10.1093/ons/opy065. [Epub ahead of print] PubMed PMID: 29688555.

Safaee MM, Scheer JK, Ailon T, Smith JS, Hart RA, Burton DC, Bess S, Neuman BJ, Passias PG, Miller E, Shaffrey CI, Schwab F, Lafage V, Klineberg EO, Ames CP; International Spine Study Group. Predictive Modeling of Length of Hospital Stay Following Adult Spinal Deformity Correction: Analysis of 653 Patients with an Accuracy of 75% within 2 Days. World Neurosurg. 2018 Apr 17. pii: S1878-8750(18)30780-0. doi: 10.1016/j.wneu.2018.04.064. [Epub ahead of print] PubMed PMID: 29678702.

Lenke LG, Shaffrey CI, Carreon LY, Cheung KMC, Dahl BT, Fehlings MG, Ames CP, Boachie-Adjei O, Dekutoski MB, Kebaish KM, Lewis SJ, Matsuyama Y, Mehdian H, Pellisé F, Qiu Y, Schwab FJ; AO Spine International and SRS Scoli-RISK-1 Study Group. Lower Extremity Motor Function Following Complex Adult Spinal Deformity Surgery: Two-Year Follow-up in the Scoli-RISK-1 Prospective, Multicenter, International Study. J Bone Joint Surg Am. 2018 Apr 18;100(8):656-665. doi: 10.2106/JBJS.17.00575. PubMed PMID: 29664852; PubMed Central PMCID: PMC5916483.

Lau D, Osorio JA, Deviren V, Ames CP. The relationship of older age and perioperative outcomes following thoracolumbar three-column osteotomy for adult spinal deformity: an analysis of 300 consecutive cases. J Neurosurg Spine. 2018 Apr 6:1-14. doi: 10.3171/2017.10.SPINE17374. [Epub ahead of print] PubMed PMID: 29624129.

Miller EK, Vila-Casademunt A, Neuman BJ, Sciubba DM, Kebaish KM, Smith JS, Alanay A, Acaroglu ER, Kleinstück F, Obeid I, Sánchez Pérez-Grueso FJ, Carreon LY, Schwab FJ, Bess S, Scheer JK, Lafage V, Shaffrey CI, Pellisé F, Ames CP; European Spine Study Group; International Spine Study Group. External validation of the adult spinal deformity (ASD) frailty index (ASD-FI). Eur Spine J. 2018 Mar 30. doi: 10.1007/s00586-018-5575-3. [Epub ahead of print] PubMed PMID: 29603013.

Yeramaneni S, Ames CP, Bess S, Burton D, Smith JS, Glassman S, Gum JL, Carreon L, Jain A, Zygourakis C, Avramis I, Hostin R; International Spine Study Group. Center variation in episode-of-care costs for adult spinal deformity surgery: results from a prospective, multicenter database. Spine J. 2018 Mar 22. pii: S1529-9430(18)30101-3. doi: 10.1016/j.spinee.2018.03.012. [Epub ahead of print] PubMed PMID: 29578109.

Raad M, Jain A, Neuman BJ, Hassanzadeh H, Gupta MC, Burton DC, Mundis GM Jr., Lafage V, Klineberg EO, Hostin RA, Ames CP, Bess S, Sciubba DM, Kebaish KM; International Spine Study Group. Association of Patient-reported Narcotic Use with Short- and Long-term Outcomes After Adult Spinal Deformity Surgery: Multicenter Study of 425 Patients With 2-year Follow-up. Spine (Phila Pa 1976). 2018 Mar 13. doi: 10.1097/BRS.0000000000002631. [Epub ahead of print] PubMed PMID: 29538242.

Dalle Ore CL, Lau D, Davis JL, Safaee MM, Ames CP. Rare case of a recurrent juvenile ossifying fibroma of the lumbosacral spine. J Neurosurg Spine. 2018 Mar 9:1-7. doi: 10.3171/2017.10.SPINE17947. [Epub ahead of print] PubMed PMID: 29521580.

Poorman GW, Passias PG, Qureshi R, Hassanzadeh H, Horn S, Bortz C, Segreto F, Jain A, Kelly M, Hostin R, Ames C, Smith J, LaFage V, Burton D, Bess S, Shaffrey C, Schwab F, Gupta M. Cost-utility analysis of cervical deformity surgeries using 1-year outcome. Spine J. 2018 Feb 27. pii: S1529-9430(18)30019-6. doi: 10.1016/j.spinee.2018.01.016. [Epub ahead of print] PubMed PMID: 29499339.

Safaee MM, Deviren V, Dalle Ore C, Scheer JK, Lau D, Osorio JA, Nicholls F, Ames CP. Ligament augmentation for prevention of proximal junctional kyphosis and proximal junctional failure in adult spinal deformity. J Neurosurg Spine. 2018 May;28(5):512-519. doi: 10.3171/2017.9.SPINE1710. Epub 2018 Feb 23. PubMed PMID: 29473789.

Iyer S, Klineberg EO, Zebala LP, Kelly MP, Hart RA, Gupta MC, Hamilton DK, Mundis GM, Sciubba D, Ames CP, Smith JS, Lafage V, Burton D, Kim HJ; International Spine Study Group (ISSG). Dural Tears in Adult Deformity Surgery: Incidence, Risk Factors, and Outcomes. Global Spine J. 2018 Feb;8(1):25-31. doi: 10.1177/2192568217717973. Epub 2017 Jul 20. PubMed PMID: 29456912; PubMed Central PMCID: PMC5810895.

Fehlings MG, Kato S, Lenke LG, Nakashima H, Nagoshi N, Shaffrey CI, Cheung KMC, Carreon L, Dekutoski MB, Schwab FJ, Boachie-Adjei O, Kebaish KM, Ames CP, Qiu Y, Matsuyama Y, Dahl BT, Mehdian H, Pellisé-Urquiza F, Lewis SJ, Berven SH. Incidence and risk factors of postoperative neurologic decline after complex adult spinal deformity surgery: results of the Scoli-RISK-1 study. Spine J. 2018 Feb 13. pii: S1529-9430(18)30057-3. doi: 10.1016/j.spinee.2018.02.001. [Epub ahead of print] PubMed PMID: 29452281.

Reid DBC, Daniels AH, Ailon T, Miller E, Sciubba DM, Smith JS, Shaffrey CI, Schwab F, Burton D, Hart RA, Hostin R, Line B, Bess S, Ames CP; International Spine Study Group. Frailty and Health-Related Quality of Life Improvement Following Adult Spinal Deformity Surgery. World Neurosurg. 2018 Apr;112:e548-e554. doi: 10.1016/j.wneu.2018.01.079. Epub 2018 Jan 31. PubMed PMID: 29360585.

Safaee MM, Ames CP, Deviren V, Clark AJ. Minimally Invasive Lateral Retroperitoneal Approach for Resection of Extraforaminal Lumbar Plexus Schwannomas: Operative Techniques and Literature Review. Oper Neurosurg (Hagerstown). 2018 Jan 17. doi: 10.1093/ons/opx304. [Epub ahead of print] PubMed PMID: 29351647.

Smith JS, Shaffrey CI, Kim HJ, Passias P, Protopsaltis T, Lafage R, Mundis GM Jr, Klineberg E, Lafage V, Schwab FJ, Scheer JK, Miller E, Kelly M, Hamilton DK, Gupta M, Deviren V, Hostin R, Albert T, Riew KD, Hart R, Burton D, Bess S, Ames CP. Prospective Multicenter Assessment of All-Cause Mortality Following Surgery for Adult Cervical Deformity. Neurosurgery. 2018 Jan 17. doi: 10.1093/neuros/nyx605. [Epub ahead of print] PubMed PMID: 29351637.

Langella F, Villafañe JH, Lafage V, Smith JS, Shaffrey C, Kim HJ, Burton D, Hostin R, Bess S, Ames C, Mundis G, Klineberg E, Schwab F, Lafage R, Berjano P. Xipho-pubic angle (XPA) correlates with patient's reported outcomes in a population of adult spinal deformity: results from a multi-center cohort study. Eur Spine J. 2018 Mar;27(3):670-677. doi: 10.1007/s00586-017-5460-5. Epub 2018 Jan 12. PubMed PMID: 29330576.

Hosogane N, Ames C, Matsumoto M, Yagi M, Matsuyama Y, Taneichi H, Yamato Y, Takeuchi D, Schwab F, Shaffrey C, Smith JS, Bess S, Lafage V; International Spine Study Group. Ethnic Variations in Radiographic Parameters and SRS-22 Scores in Adult Spinal Deformity: A Comparison Between North American and Japanese Patients Above 50 Years of Age With Minimum 2-Year Follow-up. Clin Spine Surg. 2018 Jan 8. doi: 10.1097/BSD.0000000000000610. [Epub ahead of print] PubMed PMID: 29315120.

Grabel ZJ, Hart RA, Clark AJ, Park SH, Shaffrey CI, Scheer JK, Smith JS, Kelly MP, DePasse JM, Gupta MC, Ames CP, Daniels AH. Adult Spinal Deformity Knowledge in Orthopedic Spine Surgeons: Impact of Fellowship Training, Experience, and Practice Characteristics. Spine Deform. 2018 Jan;6(1):60-66. doi: 10.1016/j.jspd.2017.06.003. PubMed PMID: 29287819.

Challier V, Henry JK, Liu S, Ames C, Kebaish K, Obeid I, Hostin R, Gupta M, Boachie-Adjei O, Smith JS, Mundis G, Bess S, Schwab F, Lafage V; International Spine Study Group. Complication Rates and Maintenance of Correction After 3-Column Osteotomy in the Elderly: Report of 55 Patients With 2-Year Follow-up. Neurosurgery. 2017 Dec 21. doi: 10.1093/neuros/nyx580. [Epub ahead of print] PubMed PMID: 29281113.

Ailon T, Smith JS, Shaffrey CI, Kim HJ, Mundis G, Gupta M, Klineberg E, Schwab F, Lafage V, Lafage R, Passias P, Protopsaltis T, Neuman B, Daniels A, Scheer JK, Soroceanu A, Hart R, Hostin R, Burton D, Deviren V, Albert TJ, Riew KD, Bess S, Ames CP; International Spine Study Group. Outcomes of Operative Treatment for Adult Cervical Deformity: A Prospective Multicenter Assessment With 1-Year Follow-up. Neurosurgery. 2017 Dec 21. doi: 10.1093/neuros/nyx574. [Epub ahead of print] PubMed PMID: 29281107.

Passias PG, Bortz C, Horn S, Segreto F, Poorman G, Jalai C, Daniels A, Hamilton DK, Kim HJ, Sciubba D, Smith JS, Neuman B, Shaffrey C, Lafage V, Lafage R, Protopsaltis T, Ames C, Hart R, Mundis G, Eastlack R; International Spine Study Group. Drivers of Cervical Deformity Have a Strong Influence on Achieving Optimal Radiographic and Clinical Outcomes at 1 Year After Cervical Deformity Surgery. World Neurosurg. 2018 Apr;112:e61-e68. doi: 10.1016/j.wneu.2017.12.024. Epub 2017 Dec 14. PubMed PMID: 29248781.

Protopsaltis TS, Ramchandran S, Hamilton K, Sciubba D, Passias PG, Lafage V, Lafage R, Smith JS, Hart RA, Gupta M, Burton D, Bess S, Shaffrey C, Ames CP; International Spine Study Group (ISSG). Analysis of Successful vs. Failed Radiographic Outcomes following Cervical Deformity Surgery. Spine (Phila Pa 1976). 2017 Dec 8. doi: 10.1097/BRS.0000000000002524. [Epub ahead of print] PubMed PMID: 29227365.

Kelly MP, Kim HJ, Ames CP, Burton DC, Carreon LY, Polly DW Jr, Hostin R, Jain A, Gum JL, Lafage V, Schwab FJ, Shaffrey CI, Smith JS, Bess S; International Spine Study Group. Minimum Detectable Measurement Difference (MDMD) for Health Related Quality of Life (HRQL) Measures Varies According Age and Disability in Adult Spinal Deformity (ASD): Implications for Calculating Minimal Clinically Important Difference (MCID). Spine (Phila Pa 1976). 2017 Dec 5. doi: 10.1097/BRS.0000000000002519. [Epub ahead of print] PubMed PMID: 29215503.

Lau D, Chan AK, Deverin V, Ames CP. Does prior spine surgery or instrumentation affect surgical outcomes following 3-column osteotomy for correction of thoracolumbar deformities? Neurosurg Focus. 2017 Dec;43(6):E8. doi: 10.3171/2017.8.FOCUS17460. PubMed PMID: 29191104.

Poorman GW, Passias PG, Horn SR, Frangella NJ, Daniels AH, Hamilton DK, Kim H, Sciubba D, Diebo BG, Bortz CA, Segreto FA, Kelly MP, Smith JS, Neuman BJ, Shaffrey CI, LaFage V, LaFage R, Ames CP, Hart R, Mundis GM Jr, Eastlack R; International Spine Study Group. Despite worse baseline status depressed patients achieved outcomes similar to those in nondepressed patients after surgery for cervical deformity. Neurosurg Focus. 2017 Dec;43(6):E10. doi: 10.3171/2017.8.FOCUS17486. PubMed PMID: 29191101. v Miller EK, Neuman BJ, Jain A, Daniels AH, Ailon T, Sciubba DM, Kebaish KM, Lafage V, Scheer JK, Smith JS, Bess S, Shaffrey CI, Ames CP; International Spine Study Group. An assessment of frailty as a tool for risk stratification in adult spinal deformity surgery. Neurosurg Focus. 2017 Dec;43(6):E3. doi: 10.3171/2017.10.FOCUS17472. PubMed PMID: 29191099.

Shaffrey CI, Smith JS, Ames CP, Yagi M, Alanay A, Ha Y. Introduction. Adult spinal deformity. Neurosurg Focus. 2017 Dec;43(6):E1. doi: 10.3171/2017.9.FOCUS17599. PubMed PMID: 29191097.

Bumpass DB, Lenke LG, Gum JL, Shaffrey CI, Smith JS, Ames CP, Bess S, Neuman BJ, Klineberg E, Mundis GM Jr, Schwab F, Lafage V, Kim HJ, Burton DC, Kebaish KM, Hostin R, Lafage R, Kelly MP; International Spine Study Group. Male sex may not be associated with worse outcomes in primary all-posterior adult spinal deformity surgery: a multicenter analysis. Neurosurg Focus. 2017 Dec;43(6):E9. doi: 10.3171/2017.9.FOCUS17475. PubMed PMID: 29191095.

Oh T, Scheer JK, Smith JS, Hostin R, Robinson C, Gum JL, Schwab F, Hart RA, Lafage V, Burton DC, Bess S, Protopsaltis T, Klineberg EO, Shaffrey CI, Ames CP; International Spine Study Group. Potential of predictive computer models for preoperative patient selection to enhance overall quality-adjusted life years gained at 2-year follow-up: a simulation in 234 patients with adult spinal deformity. Neurosurg Focus. 2017 Dec;43(6):E2. doi: 10.3171/2017.9.FOCUS17494. PubMed PMID: 29191094.

Hart RA, Rastegar F, Contag A, Kane M, Daniels A, Klineberg E, Eastlack R, Smith JS, Hostin R, Hamilton DK, Gum JL, Burton DC, Sheer JK, Ames C, Schwab F, Lafage V, Bess S, Shaffrey C, Kebaish K; International Spine Study Group. Inter- and Intra-rater Reliability of the Hart-ISSG Proximal Junctional Failure Severity Scale. Spine (Phila Pa 1976). 2018 Apr 15;43(8):E461-E467. doi: 10.1097/BRS.0000000000002498. PubMed PMID: 29189643.

Ramchandran S, Protopsaltis TS, Sciubba D, Scheer JK, Jalai CM, Daniels A, Passias PG, Lafage V, Kim HJ, Mundis G, Klineberg E, Hart RA, Smith JS, Shaffrey C, Ames CP; International Spine Study Group. Prospective multi-centric evaluation of upper cervical and infra-cervical sagittal compensatory alignment in patients with adult cervical deformity. Eur Spine J. 2018 Feb;27(2):416-425. doi: 10.1007/s00586-017-5395-x. Epub 2017 Nov 28. PubMed PMID: 29185112.

Kato S, Fehlings MG, Lewis SJ, Lenke LG, Shaffrey CI, Cheung KMC, Carreon L, Dekutoski MB, Schwab FJ, Boachie-Adjei O, Kebaish KM, Ames CP, Qiu Y, Matsuyama Y, Dahl BT, Mehdian H, Pellisé F, Berven SH. An Analysis of the Incidence and Outcomes of Major vs. Minor Neurological Decline after Complex Adult Spinal Deformity Surgery: A Sub-analysis of Scoli-RISK-1 Study. Spine (Phila Pa 1976). 2017 Nov 10. doi: 10.1097/BRS.0000000000002486. [Epub ahead of print] PubMed PMID: 29135883.

Miller EK, Ailon T, Neuman BJ, Klineberg EO, Mundis GM Jr., Sciubba DM, Kebaish KM, Lafage V, Scheer JK, Smith JS, Hamilton DK, Bess S, Shaffrey CI, Ames CP; International Spine Study Group. Assessment of a Novel Adult Cervical Deformity Frailty Index as a Component of Preoperative Risk Stratification. World Neurosurg. 2018 Jan;109:e800-e806. doi: 10.1016/j.wneu.2017.10.092. Epub 2017 Oct 26. PubMed PMID: 29107159.

Bae J, Theologis AA, Strom R, Tay B, Burch S, Berven S, Mummaneni PV, Chou D, Ames CP, Deviren V. Comparative analysis of 3 surgical strategies for adult spinal deformity with mild to moderate sagittal imbalance. J Neurosurg Spine. 2018 Jan;28(1):40-49. doi: 10.3171/2017.5.SPINE161370. Epub 2017 Nov 3. PubMed PMID: 29087808.

Passias PG, Horn SR, Jalai CM, Ramchandran S, Poorman GW, Kim HJ, Smith JS, Sciubba D, Soroceanu A, Ames CP, Hamilton DK, Eastlack R, Burton D, Gupta M, Bess S, Lafage V, Schwab F. Cervical Alignment Changes in Patients Developing Proximal Junctional Kyphosis Following Surgical Correction of Adult Spinal Deformity. Neurosurgery. 2017 Oct 12. doi: 10.1093/neuros/nyx479. [Epub ahead of print] PubMed PMID: 29040759.

Passias PG, Jalai CM, Lafage V, Poorman GW, Vira S, Horn SR, Scheer JK, Hamilton DK, Line BG, Bess S, Schwab FJ, Ames CP, Burton DC, Hart RA, Klineberg EO. Recovery Kinetics of Radiographic and Implant-Related Revision Patients Following Adult Spinal Deformity Surgery. Neurosurgery. 2017 Oct 6. doi: 10.1093/neuros/nyx490. [Epub ahead of print] PubMed PMID: 29029213.

Nguyen J, Chu B, Kuo CC, Leasure JM, Ames C, Kondrashov D. Changes in foraminal area with anterior decompression versus keyhole foraminotomy in the cervical spine: a biomechanical investigation. J Neurosurg Spine. 2017 Dec;27(6):620-626. doi: 10.3171/2017.2.SPINE141237. Epub 2017 Oct 13. PubMed PMID: 29027895.