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Lawrence Lenke

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https://www.readbyqxmd.com/read/29538060/clinical-spinal-deformity-research-from-inception-to-global-standardization
#1
Lawrence G Lenke
No abstract text is available yet for this article.
April 1, 2018: Spine
https://www.readbyqxmd.com/read/29509617/clinical-and-radiographic-outcomes-after-posterior-vertebral-column-resection-for-severe-spinal-deformity-with-five-year-follow-up
#2
Max S Riley, Lawrence G Lenke, Todd M Chapman, Brenda A Sides, Kathy M Blanke, Michael P Kelly
BACKGROUND: Short-term studies have shown improved outcomes and alignment after posterior vertebral column resection for severe spinal deformity. Our goal was to report long-term changes in radiographic and health-related quality-of-life measures in a consecutive series of pediatric and adult patients undergoing posterior vertebral column resection with a minimum follow-up of 5 years. METHODS: We reviewed all patients undergoing posterior vertebral column resection by a single surgeon prior to January 1, 2010, at a single institution...
March 7, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29501749/rod-fracture-in-adult-spinal-deformity-surgery-fused-to-the-sacrum-prevalence-risk-factors-and-impact-on-health-related-quality-of-life-in-526-patients
#3
Thamrong Lertudomphonwanit, Michael P Kelly, Keith H Bridwell, Lawrence G Lenke, Steven J McAnany, Prachya Punyarat, Timothy P Bryan, Jacob M Buchowski, Lukas P Zebala, Brenda A Sides, Karen Steger-May, Munish C Gupta
BACKGROUND CONTEXT: Risk factors associated with rod fracture (RF) following adult spinal deformity (ASD) surgery fused to the sacrum remain debatable and the impact of RF on patient-reported outcomes (PROs) after ASD surgery has not been investigated. PURPOSE: To evaluate the prevalence of and risk factors for RF and determine PROs change associated with RF after ASD surgery fused to the sacrum. STUDY DESIGN/SETTING: Retrospective single-center cohort...
February 28, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29462061/visual-loss-following-spine-surgery-what-have-we-seen-within-the-scoliosis-research-society-morbidity-and-mortality-database
#4
Jamal N Shillingford, Joseph L Laratta, Nana O Sarpong, Hasani Swindell, Meghan Cerpa, Ronald A Lehman, Lawrence G Lenke, Charla Fischer
STUDY DESIGN: A retrospective review of the Scoliosis Research Society (SRS) morbidity and mortality (M&M) database. OBJECTIVE: The aim of this study was to investigate visual related complications in spinal deformity patients undergoing spine surgery. SUMMARY OF BACKGROUND DATA: The SRS compiles surgeon-reported complications into an M&M database, tracking postoperative complications including visual loss, neurological deficits, infections, and death...
February 16, 2018: Spine
https://www.readbyqxmd.com/read/29462037/the-free-hand-technique-for-s2-alar-iliac-screw-placement-a-safe-and-effective-method-for-sacropelvic-fixation-in-adult-spinal-deformity
#5
Jamal N Shillingford, Joseph L Laratta, Lee A Tan, Nana O Sarpong, James D Lin, Charla R Fischer, Ronald A Lehman, Yongjung J Kim, Lawrence G Lenke
BACKGROUND: Spinopelvic fixation is an integral part of achieving solid fusion across the lumbosacral junction, especially in deformity procedures requiring substantial correction or long-segment constructs. Traditional S2-alar-iliac (S2AI) screw-placement techniques utilize fluoroscopy, increasing operative time and radiation exposure to the patient and surgeon. We describe a novel free-hand technique for S2AI screw placement in patients with adult spinal deformity. METHODS: We reviewed the records of 45 consecutive patients who underwent spinopelvic fixation performed with use of S2AI screws by the senior surgeon and various fellows or residents over a 12-month period (2015 to 2016)...
February 21, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29456917/neuromonitoring-in-spinal-deformity-surgery-a-multimodality-approach
#6
REVIEW
Joseph L Laratta, Alex Ha, Jamal N Shillingford, Melvin C Makhni, Joseph M Lombardi, Earl Thuet, Ronald A Lehman, Lawrence G Lenke
Study Design: Literature review. Objective: The aim of this study was to provide an overview of the available intraoperative monitoring techniques and the evidence around their efficacy in vertebral column resection. Methods: The history of neuromonitoring and evolution of the modalities are reviewed and discussed. The authors' specific surgical techniques and preferred methods are outlined in detail. In addition, the authors' experience and the literature regarding vertebral column resection and surgical mitigation of neurologic alarms are discussed at length...
February 2018: Global Spine Journal
https://www.readbyqxmd.com/read/29452281/incidence-and-risk-factors-of-post-operative-neurological-decline-after-complex-adult-spinal-deformity-surgery-results-of-the-scoli-risk-1-study
#7
Michael G Fehlings, So Kato, Lawrence G Lenke, Hiroaki Nakashima, Narihito Nagoshi, Christopher I Shaffrey, Kenneth M C Cheung, Leah Carreon, Mark B Dekutoski, Frank J Schwab, Oheneba Boachie-Adjei, Khaled M Kebaish, Christopher P Ames, Yong Qiu, Yukihiro Matsuyama, Benny T Dahl, Hossein Mehdian, Ferran Pellisé-Urquiza, Stephen J Lewis, Sigurd H Berven
BACKGROUND CONTEXT: Significant variability in neurologic outcomes following surgical correction for adult spinal deformity (ASD) has been reported. Risk factors for decline in neurologic motor outcomes are poorly understood. PURPOSE: The objective of the present investigation was to identify the risk factors for post-operative neurological motor decline in patients undergoing complex ASD surgery. STUDY DESIGN/SETTING: A prospective international multicenter cohort study...
February 13, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29413743/safety-of-a-high-dose-tranexamic-acid-protocol-in-complex-adult-spinal-deformity-analysis-of-100-consecutive-cases
#8
James D Lin, Lawrence G Lenke, Jamal N Shillingford, Joseph L Laratta, Lee A Tan, Charla R Fischer, Mark A Weller, Ronald A Lehman
STUDY DESIGN: Retrospective review of high-dose tranexamic acid (TXA) use in consecutive patients. OBJECTIVE: To determine the safety profile of a high-dose TXA protocol in complex adult spinal deformity patients. SUMMARY OF BACKGROUND DATA: Adult spinal deformity (ASD) surgery may involve significant amounts of blood loss, especially when various osteotomy techniques are used. Antifibrinolytic agents such as TXA have been used to reduce intraoperative blood loss...
March 2018: Spine Deformity
https://www.readbyqxmd.com/read/29413734/accuracy-of-s2-alar-iliac-screw-placement-under-robotic-guidance
#9
Joseph L Laratta, Jamal N Shillingford, Joseph M Lombardi, Rami G Alrabaa, Barlas Benkli, Charla Fischer, Lawrence G Lenke, Ronald A Lehman
STUDY DESIGN: Case series. OBJECTIVES: To determine the safety and feasibility of S2 alar-iliac (S2AI) screw placement under robotic guidance. SUMMARY OF BACKGROUND DATA: Similar to standard iliac fixation, S2AI screws aid in achieving fixation across the sacropelvic junction and decreasing S1 screw strain. Fortunately, the S2AI technique minimizes prominent instrumentation and the need for offset connectors to the fusion construct. Herein, we present an analysis of the largest series of robotic-guided S2AI screws in the literature without any significant author conflicts of interest with the robotics industry...
March 2018: Spine Deformity
https://www.readbyqxmd.com/read/29413733/building-consensus-development-of-best-practice-guidelines-on-wrong-level-surgery-in-spinal-deformity
#10
Michael Vitale, Anas Minkara, Hiroko Matsumoto, Todd Albert, Richard Anderson, Peter Angevine, Aaron Buckland, Samuel Cho, Matthew Cunningham, Thomas Errico, Charla Fischer, Han Jo Kim, Ronald Lehman, Baron Lonner, Peter Passias, Themistocles Protopsaltis, Frank Schwab, Lawrence Lenke
STUDY DESIGN: Consensus-building using the Delphi and nominal group technique. OBJECTIVE: To establish best practice guidelines using formal techniques of consensus building among a group of experienced spinal deformity surgeons to avert wrong-level spinal deformity surgery. SUMMARY OF BACKGROUND DATA: Numerous previous studies have demonstrated that wrong-level spinal deformity occurs at a substantial rate, with more than half of all spine surgeons reporting direct or indirect experience operating on the wrong levels...
March 2018: Spine Deformity
https://www.readbyqxmd.com/read/29287823/posterior-only-vertebral-column-resection-for-fused-spondyloptosis
#11
Jeffrey L Gum, Lawrence G Lenke, Anand Mohapatra, Sam Q Sun, Michael P Kelly
STUDY DESIGN: Retrospective review. OBJECTIVES: To describe 3 cases of a posterior-only vertebral column resection (pVCR) for the treatment of spondyloptosis in the setting of prior spinal fusions. SUMMARY OF BACKGROUND DATA: Lumbosacral spondyloptosis is a rare spinal deformity with a number of surgical options, none of which demonstrate clear superiority. The use of an L5 vertebral column resection, via combined anterior and posterior approaches, to restore lumbosacral alignment has been described though is accompanied by high rates of neurological deficit...
January 2018: Spine Deformity
https://www.readbyqxmd.com/read/29191095/male-sex-may-not-be-associated-with-worse-outcomes-in-primary-all-posterior-adult-spinal-deformity-surgery-a-multicenter-analysis
#12
David B Bumpass, Lawrence G Lenke, Jeffrey L Gum, Christopher I Shaffrey, Justin S Smith, Christopher P Ames, Shay Bess, Brian J Neuman, Eric Klineberg, Gregory M Mundis, Frank Schwab, Virginie Lafage, Han Jo Kim, Douglas C Burton, Khaled M Kebaish, Richard Hostin, Renaud Lafage, Michael P Kelly
OBJECTIVE Adolescent spine deformity studies have shown that male patients require longer surgery and have greater estimated blood loss (EBL) and complications compared with female patients. No studies exist to support this relationship in adult spinal deformity (ASD). The purpose of this study was to investigate associations between sex and complications, deformity correction, and health-related quality of life (HRQOL) in patients with ASD. It was hypothesized that male ASD patients would have greater EBL, longer surgery, and more complications than female ASD patients...
December 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/29171797/health-related-quality-of-life-outcomes-in-complex-adult-spinal-deformity-surgery
#13
Max S Riley, Keith H Bridwell, Lawrence G Lenke, Jonathan Dalton, Michael P Kelly
OBJECTIVE Significant health-related quality of life (HRQOL) benefits have been observed for patients undergoing primary and revision adult spinal deformity (ASD) surgery. The purpose of this study was to report changes in HRQOL measures in a consecutive series of patients undergoing complex spinal reconstructive surgery, using Scoli-RISK-1 (SR-1) inclusion criteria. METHODS This was a single-center, retrospective cohort study. The SR-1 inclusion criteria were used to define patients with complex ASD treated between June 1, 2009, and June 1, 2011...
February 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29135883/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
#14
So Kato, Michael G Fehlings, Stephen J Lewis, Lawrence G Lenke, Christopher I Shaffrey, Kenneth M C Cheung, Leah Carreon, Mark B Dekutoski, Frank J Schwab, Oheneba Boachie-Adjei, Khaled M Kebaish, Christopher P Ames, Yong Qiu, Yukihiro Matsuyama, Benny T Dahl, Hossein Mehdian, Ferran Pellisé, Sigurd H Berven
STUDY DESIGN: A sub-analysis from a prospective, multicenter, international cohort study in 15 sites (Scoli-RISK-1). OBJECTIVE: To report detailed information regarding the severity of neurological decline related to complex adult spine deformity (ASD) surgery and to examine outcomes based on severity. SUMMARY OF BACKGROUND DATA: The basis of post-operative neurological decline after ASD surgeries can occur due to nerve root(s) or spinal cord dysfunction...
November 10, 2017: Spine
https://www.readbyqxmd.com/read/29057344/utilization-of-vertebroplasty-and-kyphoplasty-procedures-throughout-the-united-states-over-a-recent-decade-an-analysis-of-the-nationwide-inpatient-sample
#15
Joseph L Laratta, Jamal N Shillingford, Joseph M Lombardi, John D Mueller, Hemant Reddy, Comron Saifi, Charla R Fischer, Steven C Ludwig, Lawrence G Lenke, Ronald A Lehman
BACKGROUND: Given the increasing societal focus on health care utilization and value-based care, it is essential to understand the demographic and economic data surrounding percutaneous vertebral augmentation procedures performed in the United States. Double-blinded prospective randomized controlled trials have shown no benefit to the use of vertebroplasty over a sham procedure in the treatment of vertebral fractures. Contrastingly, kyphoplasty may be beneficial when appropriately indicated...
September 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28965445/temporary-occipital-fixation-in-young-children-with-severe-cervical-thoracic-spinal-deformity
#16
Brian J Kelley, Anas A Minkara, Peter D Angevine, Michael G Vitale, Lawrence G Lenke, Richard C E Anderson
OBJECTIVE The long-term effects of instrumentation and fusion of the occipital-cervical-thoracic spine on spinal growth in young children are poorly understood. To mitigate the effects of this surgery on the growing pediatric spine, the authors report a novel technique used in 4 children with severe cervical-thoracic instability. These patients underwent instrumentation from the occiput to the upper thoracic region for stabilization, but without bone graft at the craniovertebral junction (CVJ). Subsequent surgery was then performed to remove the occipital instrumentation, thereby allowing further growth and increased motion across the CVJ...
October 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28922278/defining-the-critical-elements-for-the-most-common-procedures-in-spine-surgery-a-consensus-of-orthopaedic-and-neurosurgical-surgeons
#17
Joseph L Laratta, Samuel Cohen-Tanugi, Jamal N Shillingford, Joseph M Lombardi, Lawrence G Lenke, K Daniel Riew, Ronald A Lehman, Steven C Ludwig
STUDY DESIGN: Survey. OBJECTIVE: To define the critical elements of common spine surgeries. SUMMARY OF BACKGROUND DATA: Despite significant relevance to the field of spine surgery, the term "critical element" of surgery has not been clearly defined. Every surgical procedure involves numerous steps, each with its own potential for complications and harm to the patient. Despite its crucial role in surgical training, billing, and the ethicality of concurrent surgery, the term "critical element" of surgery has not been defined...
September 15, 2017: Spine
https://www.readbyqxmd.com/read/28816826/tissue-engineered-bone-differentiated-from-human-adipose-derived-stem-cells-inhibit-posterolateral-fusion-in-an-athymic-rat-model
#18
Comron Saifi, Jonahtan Bernhard, Jamal N Shillingford, Petros Petridis, Samuel Robinson, X Edward Guo, Mark Weidenbaum, Ronald A Lehman, Howard S An, Lawrence G Lenke, Gordana Vunjak-Novakovic, Joseph L Laratta
STUDY DESIGN: Biological augmentation spinal arthrodesis trial in athymic rats OBJECTIVE.: To assess the efficacy of tissue-engineered bone to promote L4-L5 intertransverse process fusion in an athymic rat model. SUMMARY OF BACKGROUND DATA: Each year in the United States, over 400,000 spinal fusion surgeries are performed requiring bone graft. The current gold standard for posterolateral lumbar fusion is autogenous iliac crest bone graft (ICBG), but the harvesting of ICBG is associated with increased operative time and significant complications...
August 14, 2017: Spine
https://www.readbyqxmd.com/read/28780621/an-international-consensus-on-the-appropriate-evaluation-and-treatment-for-adults-with-spinal-deformity
#19
Sigurd H Berven, Steven J Kamper, Niccole M Germscheid, Benny Dahl, Christopher I Shaffrey, Lawrence G Lenke, Stephen J Lewis, Kenneth M Cheung, Ahmet Alanay, Manabu Ito, David W Polly, Yong Qiu, Marinus de Kleuver
PURPOSE: Evaluation and surgical management for adult spinal deformity (ASD) patients varies between health care providers. The purpose of this study is to identify appropriateness of specific approaches and management strategies for the treatment of ASD. METHODS: From January to July 2015, the AOSpine Knowledge Deformity Forum performed a modified Delphi survey where 53 experienced deformity surgeons from 24 countries, rated the appropriateness of management strategies for multiple ASD clinical scenarios...
August 5, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28660112/vertebral-column-resection-for-rigid-spinal-deformity
#20
REVIEW
Comron Saifi, Joseph L Laratta, Petros Petridis, Jamal N Shillingford, Ronald A Lehman, Lawrence G Lenke
STUDY DESIGN: Broad narrative review. OBJECTIVE: To review the evolution, operative technique, outcomes, and complications associated with posterior vertebral column resection. METHODS: A literature review of posterior vertebral column resection was performed. The authors' surgical technique is outlined in detail. The authors' experience and the literature regarding vertebral column resection are discussed at length. RESULTS: Treatment of severe, rigid coronal and/or sagittal malalignment with posterior vertebral column resection results in approximately 50-70% correction depending on the type of deformity...
May 2017: Global Spine Journal
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