Internal Research Team

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Kingsley R. Chin, M.D.

Dr. Chin has a strong track record in research and technology innovation for Less Exposure Surgery. He graduated from Harvard Medical School with Honors and did his orthopedic training also at Harvard and a spine fellowship with renown master surgeon Dr Henry H Bohlman in Cleveland. Dr. Chin was the Chief Spine Surgeon and Assistant Professor of Orthopaedics at the University of Pennsylvania before founding the LESS Institute academic private practice in Florida. He is Professor of Clinical & Biomedical Sciences at the Charles E. Schmidt School of Medicine. He founded the LESSociety and holds over 65 published peer reviewed research articles, published several text books, and lectured at over 200 education and training events worldwide.

 
 
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Dr. Jason Seale, M.B.B.S.

Dr. Jason Seale Graduated from the University of the West Indies in 2005 and has been involved with clinical research since. He is a researcher at the LESSociety ensuring the academic activities and clinical operations are maintained.

 

Abstract

  1. A Rare Anterior Sacral Osteochondroma Presenting as Sciatica in an Adult: a Case Report and Review of the Literature
    Kingsley R. Chin, MD, Jaehon M. Kim, MD
    The Spine Journal and LES Society Research

  2. Biomechanics of posterior instrumentation in L1–L3 lateral interbody fusion: Pedicle screw rod construct vs. transfacet pedicle screws.
    Kingsley R. Chin, Anna G.U. Newcomb,MarcoT.Reis, Phillip M. Reyes, Grace A. Hickam, Josue Gabriel, Fabio J.R. Pencle, Roger D. Sung, Neil R. Crawford
    Clinical Biomechanics and LES Society Research

  3. Changes in the iliac crest–lumbar relationship from standing to prone.
    Kingsley R. Chin, MD, Andrew F. Kuntz, MD, Henry H. Bohlman, MD,Sanford E. Emery, MD
    The Spine Journal and LES Society Research

  4. Transitioning Lumbar Fusions to Outpatient Using Midline Less Exposure Surgery Techniques with Transfacet and Mediolateral Cortical Bone Pedicle Screws.
    KR Chin, FJR Pencle , RM Harris II , JA Seale
    LES Society Research

  5. Incidence and Risk Analysis of Surgical Site Infection in Spine Surgery Patients in an Outpatient versus Hospital Cohort.
    KR Chin, FJR Pencle, CF Packer, NT Britton, AV Coombs, RF Douglas, JA Seale
    LES Society Research

  6. Are Lumbar Drains Necessary After Outpatient Lumbar Interbody Fusion Using Less Exposure Surgery Techniques?
    KR Chin, FJR Pencle, AM O’Neill, KJ Conklin, MJ McGarry, JA Seale
    LES Society Research

  7. Experience and Benefits of Using a Predrilled Screw Hole before Placing Anterior Cervical Plates in 330 Consecutive Patients during ACDF.
    KR Chin, FJR Pencle, AV Coombs, L Lendvai, JA Seale, VB Cumming, CA Bruce
    LES Society Research

  8. Biomechanical Comparison of Same Size Transfacet Screws Versus Pedicle Screws Across the L5-S1 Native Disc.
    KR Chin, FJR Pencle, AGU Newcomb, MT Reis, PM Reyes, D Malhotra, WD Yu, CA Bruce, NR Crawford
    LES Society Research

  9. Body Mass Index and Smoking Status as Predictors of Progression to Surgery, Complications and Postoperative Pain in Non-traumatic Back Pain Patients.
    KR Chin, AY Jorgensen, JR Eiszner, FJR Pencle
    LES Society Research

  10. Safety and Outcome of Outpatient 2-Level Hybrid Anterior Cervical Discectomy and Fusion plus Adjacent Total Disc Replacement.
    KR Chin, FJR Pencle, AV Coombs, JA Seale
    LES Society Research

  11. Are Lumbar Drains Necessary After Outpatient Lumbar Interbody Fusion Using Less Exposure Surgery Techniques?
    KR Chin, FJR Pencle, AM O’Neill, KJ Conklin, MJ McGarry, JA Seale
    LES Society Research

  12. Clinical Outcomes of Outpatient Cervical Total Disc Replacement Compared With Outpatient Anterior Cervical Discectomy and Fusion.
    Kingsley R. Chin, MD, Fabio J.R. Pencle, MBBS, Jason A. Seale, MBBS, and Franz K. Pencle, MD
    Spine and LES Society Research

  13. Clinical Outcomes With Midline Cortical Bone Trajectory Pedicle Screws Versus Traditional Pedicle Screws in Moving Lumbar Fusions From Hospitals to Outpatient Surgery Centers.
    Kingsley R. Chin, MD, Fabio J.R. Pencle, MD, MBBS, André V. Coombs, MD, MBBS, Mohamed Elsharkawy, MD, Corrine F.Packer, MBBS, Elijah A. Hothem, MD, and Jason A. Seale, MBBS
    Clinical Spine Surgery and LES Society Research

  14. Misaligned Versus Straight Placement of Anterior Cervical Plates: A Clinical and Radiologic Outcomes Study.
    Kingsley R. Chin, MD, Fabio J.R. Pencle, MD, Shannon D. Francis, BA, Chloe A. Francis, BA, Jason A. Seale, MBBS, Elijah A. Hothem, MD
    Journal of the American Academy of Orthopaedic Surgeons and LES Society Research

  15. Early Results of the Triage Medical® Percutaneous Transfacet Pedicular BONE-LOK® Compression Device for Lumbar Fusion.
    Kingsley R. Chin, MD
    LES Society Research

  16. Lag screw fixation of remote bilateral pedicle fractures of the fourth and fifth lumbar vertebrae after a single gunshot wound: a case report and technical pearl.
    Kingsley R. Chin, MD, Karen Boselli, MD, Stephen Cairone, MD
    The Spine Journal and LES Society Research

  17. Effects of misalignment on static torsional strength of anterior cervical plate systems.
    Kingsley R. Chin, MD, Vanessa B.R. Cumming, MBBS, MeLeah Henson, MSME, Brian Murrell, MBA, Frank W. Chan, PhD
    The Spine Journal and LES Society Research

  18. Epidemiology of indications and contraindications to total disc replacement in an academic practice
    Kingsley R. Chin, MD
    The Spine Journal and LES Society Research

  19. Trends in Inpatient versus Outpatient Lumbar Microdiscectomy in the United States of America: An Epidemiologic and Economic Analysis.
    FJR Pencle, MD Brown, S Rosas, TY Law, I Onyekwelu, KR Chin, A Mesfin
    LES Society Research.

  20. Avoiding Transfusion in 700 consecutive Outpatient Spine Surgery Patients Using Less Exposure Surgery Techniques.
    FJR Pencle, NT Britton, CF Packer, JA Seale, KR Chin
    LES Society Research.

  21. Postoperative Magnetic Resonance Imaging Assessment for Potential Compressive Effects of Retained Posterior Longitudinal Ligament After Anterior Cervical Fusions: A Cross-Sectional Study.
    Kingsley R. Chin, MD,Gary Ghiselli , MD, Vanessa Cumming, MBBS, Christopher G. Furey, MD, Jung U. Yoo, MD, and Sanford E. Emery , MD, MBA
    Spine and LES Society Research

  22. Preoperative Narcotic Use as a Predictor of Clinical Outcome: Results Following Anterior Cervical Arthrodesis.
    J. Todd R. Lawrence, MD, PhD, Nickolas London, MD, Henry H. Bohlman, MD, and Kingsley R. Chin, MD
    Spine and LES Society Research

  23. Prospective Evaluation of a 3-Blade Speculum Cannula for Minimally Invasive Lumbar Microdiscectomy.
    Kingsley R. Chin, MD and Todd A. Michener, MD
    LES Society Research

  24. Risk for Infection After Anterior Cervical Fusion: Prevention with Iodophor-Impregnated Incision Drapes
    Kingsley R. Chin, MD, Nikolas London, MD, Albert O. Gee, MD, and Henry H. Bohlman, MD
    The American Journal of Orthopedics and LES Society Research

  25. Risk of Progression in De Novo Low-Magnitude Degenerative Lumbar Curves: Natural History and Literature Review.
    Kingsley R. Chin, MD, Christopher Furey, MD, and Henry H. Bohlman, MD
    The American Journal of Orthopedics and LES Society Research

  26. Safety and Usefulness of Free Fat Grafts After Microdiscectomy Using an Access Cannula: A Prospective Pilot Study and Literature Review.
    Kingsley R. Chin, MD, Rocco Bassora, MD, and Warren D. Yu, MD
    The American Journal of Orthopedics and LES Society Research

  27. Epidemiology of indications and contraindications to total disc replacement in an academic practice
    Kingsley R. Chin, MD
    The Spine Journal and LES Society Research

  28. The Mandibular Angle as a Landmark for Identification of Cervical Spinal Level.
    Joshua D. Auerbach, MD, Zachary Weidner, BS, Stephan G. Pill, MD, Samir Mehta, MD, and Kingsley R. Chin, MD
    Spine and LES Society Research

  29. The Manubrium as an External Guide for Centralizing Anterior Cervical Plates.
    Kingsley R. Chin, MD, Jonathan R. Stieber, MD, Samir Mehta, MD, Jason D. Cohen, MD, and Joshua D. Auerbach, MD
    Spine and LES Society Research

  30. The Prevalence of Indications and Contraindications to Cervical Total Disc Replacement.
    Joshua D. Auerbach, MD, Kristofer J. Jones, MD, Christian I. Fras, MD, Jessica R. Balderston, Scott A. Rushton, MD, Kingsley R. Chin, MD
    The Spine Journal and LES Society Research

  31. Use of Spinous Processes to Determine Drill Trajectory During Placement of Lateral Mass Screws: A Cadaveric Analysis.
    Kingsley R. Chin, MD, James R. Eiszner,Jeffrey S. Roh, MD, and Henry H. Bohlman, MD
    LES Society Research

  32. Lateral Lumbar Interbody Fusion in Ambulatory Surgery Centers: Patient Selection and Outcome Measures Compared With an Inhospital Cohort.
    Chin KR, Pencle FJ, Coombs AV, Brown MD, Conklin KJ, O'Neill AM, McGarry MJ, Seale JA, Hothem EA. Spine (Phila Pa 1976). 2016 Apr;41(8):686-692.

  33. Eligibility of Outpatient Spine Surgery Candidates in a Single Private Practice.
    Chin KR, Pencle FJ, Coombs AV, Packer CF, Hothem EA, Seale JA. Clin Spine Surg. 2016 Mar 17.

  34. New Approach to Filling a Corpectomy Defect
    Kingsley R. Chin, Fabio J.R. Pencle, Jason A Seale, Rishabh G. Jethanandani, Elijah A. Hothem and Vanessa Cumming

  35. Avoidance of Wrong Level Surgery in the Lumbar Spine
    Kingsley R. Chin, Fabio J.R. Pencle, Jonathan Kubik, André V. Coombs, Jason A. Seale, Neel Desai and Vanessa B Cumming

  36. Less exposure surgery for multilevel anterior cervical fusion using 2 transverse incisions.
    Chin KR, Ricchetti ET, Yu WD, Riew KD.
    J Neurosurg Spine. 2012 Sep;17(3):194-8. doi: 10.3171/2012.5.SPINE111112. Epub 2012 Jul 6.

  37. Mini-open or percutaneous bilateral lumbar transfacet pedicle screw fixation: a technical note.
    Chin KR, Seale J, Cumming V.
    J Spinal Disord Tech. 2015 Mar;28(2):61-5. doi: 10.1097/BSD.0b013e31827fe17e.

  38. Feasibility and patient-reported outcomes after outpatient single-level instrumented posterior lumbar interbody fusion in a surgery center: preliminary results in 16 patients.
    Chin KR, Coombs AV, Seale JA.
    Spine (Phila Pa 1976). 2015 Jan 1;40(1):E36-42. doi: 10.1097/BRS.0000000000000604.

  39. Avoidance of Wrong-Level Thoracic Spine Surgery Using Sterile Spinal Needles.
    Chin KR, Seale J, Cumming V.
    J Spinal Disord Tech. 2013 Oct 31. [Epub ahead of print]

  40. Stability of transforaminal lumbar interbody fusion in the setting of retained facets and posterior fixation using transfacet or standard pedicle screws.
    Chin KR, Reis MT, Reyes PM, Newcomb AG, Neagoe A, Gabriel JP, Sung RD, Crawford NR.
    Spine J. 2015 May 1;15(5):1077-82. doi: 10.1016/j.spinee.2013.06.103. Epub 2013 Nov 5.

  41. Ideal starting point and trajectory for C2 pedicle screw placement: a 3D computed tomography analysis using perioperative measurements.
    Chin KR, Mills MV, Seale J, Cumming V.
    Spine J. 2014 Apr;14(4):615-8. doi: 10.1016/j.spinee.2013.06.077. Epub 2013 Nov 5.

  42. Mini-Open or Percutaneous Bilateral Lumbar Transfacet Pedicle Screw Fixation: A Technical Note.
    J Spinal Disord Tech. (2012 Dec 3).
    Institute for Modern and Innovative Surgery and LES Society Research.

  43. Feasibility of a New Philosophy of Stacking Single and Two-Level Cervical Plates End to End on the Same Vertebra Instead of a Three-Level Plate for Multilevel Anterior Cervical Fusion*.
    Chin, K.R., Seale, J., Cumming, V.
    Institute for Modern and Innovative Surgery and LES Society Research.

  44. Stabilizing Effects of a Particulate Demineralized Bone Matrix in the L4- Interbody Space with and without PEEK Cage – A Literature Review and Preliminary Results of a Cadaveric Biomechanical Study.
    Chin, K.R., Bruce, C.A.R., Cumming, V, et al.
    Institute for Modern and Innovative Surgery and LES Society Research.

  45. A New Paradigm in Cage Design to Promote Lateral Bridging Bone Formation during Trans-Psoas Intervertebral Fusion*.
    Chin, K.R., Seale, J., Cumming, V.
    Institute for Modern and Innovative Surgery and LES Society Research.

  46. Is Interspinous Lumbar Fusion Feasible and Real? An Analysis of Three Illustrative Cases Using an Interspinous Fixation Device and Allograft*.
    Chin, K.R., Seale, J., Cumming, V.
    Institute for Modern and Innovative Surgery and LES Society Research.

  47. Biomechanics of Stand-Alone Lateral Interbody Fixation at L4-5 and L5-S1*.
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  48. Biomechanics of Spinous Process Plating With and Without Lateral or Transforaminal Interbody Cage at L4-5.
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  49. Biomechanics of Lumbar Lateral Interbody Fixation Augmented with Pedicle Screws, Facet Screws, or Spinous Process Plate
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  50. Biomechanics of Constructs Utilizing Pedicle Screws, Facet Screws and Spinous Process Plates after TLIF.
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  51. Biomechanics of Posterior Lumbar Fixation After Unilateral L4-5 Facetectomy and TLIF Cage.
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  52. Biomechanics Advantage of the FacetFuse Contained Multiaxial Washer in Lumbar Transfacet Pedicle Fixation.
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  53. Cadaveric Biomechanical Comparison of the FacetFuse Transfacet Pedicle Screw versus Pedicle Screws in the Upper Lumbar Spine.
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  54. Biomechanical Study of the Effects of Variable Screw Lengths & Diameters Using FacetFuse Transfacet Pedicle Fixation in the Upper & Lower Lumbar Spine.
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  55. Biomechanics of Posterior Lumbar Fixation After Unilateral L4-5 Facetectomy and TLIF Cage.
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  56. Biomechanical Comparison of the FacetFuse Transfacet Pedicle Screws versus Pedicle Screws with a Transforaminal or Lateral Interbody Across the Lumbosacral Segment (L5-S1).
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

  57. Biomechanics of Stability After Unilateral Facetectomy at L5-S1 Using FacetFuse Transfacet Pedicle Screw Alone or in Combination With Contralateral Pedicle Screw Rod Fixation.
    Chin, K.R., Crawford, N.R., Yu, W.D., et al. (2011)
    Barrow Neurological Institute and LES Society Research.

Key References

  1. Internal Fixation for lumbosacral Fusion.
    King, D. (1948).
    J Bone Joint Surg, 30, 560-565.

  2. A Method of Spinal Fusion.
    Boucher, H. (1959).
    J Bone Joint Surg, 41, 248-259.

  3. External Skeletal Fixation.
    Magerl, F. (1984).Stabilization of the Lower Thoracic and Lumbar Spine with
    Clin Orthop Relat Res., 189, 125-141.

  4. Pseduarthrosis in the Lumbosacral Spine.
    Bosworth, D; Cleveland, M; Thomspon, F. (1948).
    J Bone Joint Surg, 30, 303-312.

  5. Early Results of the Triage Medical Percutaneous Transfacet Pedicular
    Chin, K. (2007).
    BONE-LOK Compression Device for Lumbar Fusion.

  6. Chiu, J; Davis, G; Clifford, T; Greenspan, M. Translaminar Facet Fixation:
    An Alternative Method for Lumbar Fusion: Report of 710 Cases. Retrieved on June 6, 2007 from www.spinecenter.com/papers/facet/facet.html

  7. A Biomechanical Comparison of Facet Screw Fixation and Pedicle Screw Fixation.
    Ferrara, L; Secor, J; Jin, B; Wakefield, A; Inceoglu, S; Benzel, E. (2003).
    Spine, 28 (12), 1226-1234

  8. Grob, D; Humke, T. (1998). Translaminar Screw Fixation in the Lumbar Spine:
    Technique, Indications, Results. Eur Spine J., 7(3), 178-186.

  9. Biomechanical comparison of a novel percutaneous tranfacet device and a traditional posterior
    Mahar, A; Kim, C; Oka, R; Odell, T; Perry, A; Mirkovic, S; Garfin, S. (2006).
    system for single level fusion.     J Spinal Disord Tech., 19 (8), 591-594.

  10. McBride, E. (1949).
    A Mortised Transfacet Bone Block for Lumbo-Sacral Fusion.
    J Bone Joint Surg Am., 31, 385-393.

  11. Park, Y; Kim, J; Oh, J; Kwon, T; Chung, H; Lee, K. (2002). Facet Fusion in the
    Lumbosacral Spine: A 2 year Follow Up study. Neurosurgery, 51 (1), 88-96.

  12. Patwardhan, A. (2004). Effect of Supplemental Translaminar Facet Screw Fixation
    of Stand-Along Anterior Lumbar Interbody Fusion Cages Under Physiologic
    Phillips, F; Cunningham, B; Carandang, G; Ghanayem, A; Voronov, L; Havey, R;
    Compressive Preloads. Spine, 29 (16), 1731-1736.

  13. Rathonyi, G; Oxland, T; Gerich, U; Grassman, L; Nolte, L. (1998). The Role of
    Supplemental Translaminar Screws in Anterior Lumbar Interbody Fixation:
    A Biomechanical Study. Eur Spine J., 7(5), 400-407.

  14. Translaminar Facet Screw Fixation.
    Sasso, R. and Best, N. (2006).
    WSJ, 1 (1), 34-39.

  15. Spinasanta, S. Pedicle Screws. Retrieved on June 6, 2007 from
    http://www.spineuniverse.com/displayarticle.php/article491.html

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LES Surgeries

  1. L5-S1 Fusion

  2. L5-S1 Decompression and Fusion