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Spinal deformity

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https://www.readbyqxmd.com/read/28811987/early-complications-and-outcomes-in-adult-spinal-deformity-surgery-an-nsqip-study-based-on-5803-patients
#1
Nathan J Lee, Parth Kothari, Jun S Kim, John I Shin, Kevin Phan, John Di Capua, Sulaiman Somani, Dante M Leven, Javier Z Guzman, Samuel K Cho
STUDY DESIGN: Retrospective analysis. OBJECTIVE: The purpose of this study is to determine the incidence, impact, and risk factors for short-term postoperative complications following elective adult spinal deformity (ASD) surgery. METHODS: Current Procedural Terminology codes were used to query the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) for adults who underwent spinal deformity surgery from 2010 to 2014...
August 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28811985/incidence-impact-and-risk-factors-for-30-day-wound-complications-following-elective-adult-spinal-deformity-surgery
#2
Nathan J Lee, John I Shin, Parth Kothari, Jun S Kim, Dante M Leven, Jeremy Steinberger, Javier Z Guzman, Branko Skovrlj, John M Caridi, Samuel K Cho
STUDY DESIGN: Case-control study. OBJECTIVE: To determine the incidence, impact, and risk factors for wound complications within 30 days following elective adult spinal deformity surgery. METHODS: Current Procedural Terminology and International Classification of Diseases, Ninth Edition, diagnosis codes were used to query the database for adults who underwent spinal deformity surgery from 2010 to 2014. Patients were separated into groups of those with and without wound complications...
August 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28797595/effects-of-motion-segment-simulation-and-joint-positioning-on-spinal-loads-in-trunk-musculoskeletal-models
#3
F Ghezelbash, A H Eskandari, A Shirazi-Adl, N Arjmand, Z El-Ouaaid, A Plamondon
Musculoskeletal models represent spinal motion segments by spherical joints/beams with linear/nonlinear properties placed at various locations. We investigated the fidelity of these simplified models (i.e., spherical joints with/without rotational springs and beams considering nonlinear/linear properties) in predicting kinematics of the ligamentous spine in comparison with a detailed finite element (FE) model while considering various anterior-posterior joint placements. Using the simplified models with different joint offsets in a subject-specific musculoskeletal model, we computed local spinal forces during forward flexion and compared results with intradiscal pressure measurements...
July 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28796043/smith-petersen-osteotomy-combined-with-anterior-debridement-and-allografting-for-active-thoracic-and-lumbar-spinal-tuberculosis-with-kyphotic-deformity-in-young-children-a-prospective-study-and-literature-review
#4
Yakefu Abulizi, Wei-Dong Liang, Maierdan Maimaiti, Wei-Bin Sheng
The purpose of this study is to determine the efficacy and safety of Smith-Petersen osteotomy combined with anterior debridement and allogenic strut bone grafting for the treatment of active thoracic and lumbar spinal tuberculosis with kyphotic deformity in young children.Spinal tuberculosis is more destructive in young children and often causes severe kyphosis and paraplegia. Despite much progress has been made, surgical treatment is still controversial and technically challenging.From October 2010 to August 2014, 25 children (11 males, 14 females; aged under 6 years) with active thoracic and lumbar spinal tuberculosis treated by Smith-Petersen osteotomy combined with anterior debridement and allogenic strut bone grafting were enrolled in this study...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28795268/management-of-a-high-thoracic-chance-fracture
#5
Anouar Bourghli, Ibrahim Obeid, Louis Boissiere, Jean-Marc Vital, Zafer Tabboush, Mohammed Al Sarawan
PURPOSE: Chance fracture of the high thoracic spine is rare, and its impact on the adjacent cervical spine can be important. METHODS: We present the case of a 16-year-old male, who fell down from a 2 m height, in an unknown context as he has a mental retardation, and no witness saw the accident. Initial CT scan revealed a comminuted depressed fracture of the right parietal bone, associated with a chance fracture at the level of T3 with a kyphosis and bilateral lung contusion...
August 9, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28791464/a-computed-tomographic-anatomical-study-of-the-upper-sacrum-application-for-a-user-guide-of-pelvic-fixation-with-iliosacral-screws-in-adult-spinal-deformity
#6
Arnaud Dubory, Houssam Bouloussa, Guillaume Riouallon, Stéphane Wolff
PURPOSE: Widely used in traumatic pelvic ring fractures, the iliosacral (IS) screw technique for spino-pelvic fixation remains anecdotal in adult spinal deformity. The objective of this study was to assess anatomical variability of the adult upper sacrum and to provide a user guide of spino-pelvic fixation with IS screws in adult spinal deformity. METHODS: Anatomical variability of the upper sacrum according to age, gender, height and weight was sought on 30 consecutive pelvic CT-scans...
August 8, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28790002/reduced-impact-of-smoking-status-on-30-day-complication-and-readmission-rates-after-elective-spinal-fusion-%C3%A2-3-levels-for-adult-spine-deformity-a-single-institutional-study-of-839-patients
#7
Aladine A Elsamadicy, Owoicho Adogwa, Amanda Sergesketter, Victoria D Vuong, Emily Lydon, Shay Behrens, Joseph Cheng, Carlos A Bagley, Isaac O Karikari
BACKGROUND: Smoking status has been shown to affect postoperative outcomes after surgery. The aim of this study is to determine if patients' smoking status impacts 30-day complication and re-admission rates after elective complex spinal fusion (≥3 levels). METHODS: The medical records of 839 adult spinal deformity patients undergoing elective complex spinal fusion (≥3 levels) at a major academic institution from 2005 to 2015 were reviewed. We identified 124(14...
August 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28781156/evaluation-of-deformed-image-based-dose-calculations-for-adaptive-radiotherapy-of-nasopharyngeal-carcinoma
#8
Miranda Poon, Catherine Holborn, Ka Fai Cheng, Winky Wing Ki Fung, George Chiu
The ultimate goal of adaptive radiotherapy (ART) is to deliver truly customized radiation treatments. Currently, the quality of cone-beam computed tomography (CBCT) images is still inferior to that of conventional CT images in contour delineations and dose calculations for replanning purposes. This retrospective study aims to evaluate the dosimetric accuracy of using deformed conventional CT images for dose calculations, in the hope of inferring the feasibility of ART using planning CT (PCT) images that deformed to up-to-date CBCT images for patients with nasopharyngeal carcinoma (NPC)...
August 3, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28780621/an-international-consensus-on-the-appropriate-evaluation-and-treatment-for-adults-with-spinal-deformity
#9
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/28777284/outcomes-of-primary-posterior-spinal-fusion-for-scoliosis-in-spinal-muscular-atrophy-clinical-radiographic-and-pulmonary-outcomes-and-complications
#10
Joshua B Holt, Lori A Dolan, Stuart L Weinstein
BACKGROUND: Spinal muscular atrophy (SMA) is a progressive neuromuscular disease commonly including progressive scoliosis resulting in severe deformity and negatively affecting pulmonary function. Surgical correction and stabilization of this progressive deformity is generally recommended; however, the timing and method of surgical fixation remains controversial. METHODS: Retrospective review of clinical, radiographic, and pulmonary function data from 16 children with SMA and surgically treated scoliosis between 1985 and 2013...
August 2, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28777282/intrawound-vancomycin-powder-associated-with-reduced-surgical-site-infection-in-rib-based-distraction-surgery
#11
Justin M Haller, John A Heflin, David A Hulet, Qian Ding, Angela P Presson, John T Smith
BACKGROUND: Despite clinical reports of improved pulmonary function and reduced spinal deformity with rib-based distraction surgery in early-onset scoliosis (EOS) patients, infection remains a common complication, reported as high as 32% in some studies. The purpose of this study was to evaluate intrawound vancomycin powder in pediatric patients managed with rib-based distraction for EOS. METHODS: This was a single institution retrospective cohort study of EOS patients treated with rib-based distraction...
August 2, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28777277/comparison-of-ponte-osteotomies-and-3-column-osteotomies-in-the-treatment-of-congenital-spinal-deformity
#12
Priscella Chan, Lindsay M Andras, Ena Nielsen, Ted Sousa, Elizabeth Joiner, Paul D Choi, Vernon T Tolo, David L Skaggs
BACKGROUND: Congenital spinal deformity (CSD) has traditionally been treated with 3-column osteotomies [hemivertebrectomy (HV) or vertebral column resection (VCR)] to address rigid deformities. Alternatively, multiple Ponte osteotomies (PO) may provide correction while minimizing risk. The purpose of this study was to compare safety and outcomes of patients undergoing surgical treatment for CSD with these 3 procedures. METHODS: Retrospective review of CSD patients treated with posterior spinal fusion between 1996 to 2013...
August 2, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28770547/analysis-of-dural-sac-thickness-in-the-human-cervical-spine
#13
Soonwook Kwon, Seung-Woo Suh, Dasom Kim, Im Joo Rhyu, Hyunung Yu, Seung Woo Han, Jae-Young Hong
The thickness of the dura mater in the human cervical spine can vary between individuals and by vertebral level; these differences can result in various clinical outcomes. The purpose was to measure and analyze cervical dura mater thickness. Microscopic measurements were made of tissue from human cadavers. The subjects were nine human cadavers with no previous history of spinal deformity or surgery. Fourteen segments of both anterior and posterior dura mater from the C1 to C7 cervical vertebrae were obtained...
August 2, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28770402/kinematic-efficacy-of-supplemental-anterior-lumbar-interbody-fusion-at-lumbosacral-levels-in-thoracolumbosacral-deformity-correction-with-and-without-pedicle-subtraction-osteotomy-at-l3-an-in-vitro-cadaveric-study
#14
Benny T Dahl, Jonathan A Harris, Manasa Gudipally, Mark Moldavsky, Saif Khalil, Brandon S Bucklen
PURPOSE: Pedicle subtraction osteotomy (PSO) is performed to treat rigid, sagittal spinal deformities, but high rates of implant failure are reported. Anterior lumbar interbody fusion has been proposed to reduce this risk, but biomechanical investigation is lacking. The goal of this study was to quantify the (1) destabilizing effects of a lumbar osteotomy and (2) contribution of anterior lumbar interbody fusion (ALIF) at the lumbosacral junction as recommended in literature. METHODS: Fourteen fresh human thoracolumbosacral spines (T12-S1) were tested in flexion-extension (FE), lateral bending (LB), and axial rotation (AR)...
August 2, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28768786/posterior-spinal-fusion-for-adolescent-idiopathic-scoliosis-using-a-convex-pedicle-screw-technique-a-novel-concept-of-deformity-correction
#15
A I Tsirikos, G Mataliotakis, N Bounakis
AIMS: We present the results of correcting a double or triple curve adolescent idiopathic scoliosis using a convex segmental pedicle screw technique. PATIENTS AND METHODS: We reviewed 191 patients with a mean age at surgery of 15 years (11 to 23.3). Pedicle screws were placed at the convexity of each curve. Concave screws were inserted at one or two cephalad levels and two caudal levels. The mean operating time was 183 minutes (132 to 276) and the mean blood loss 0...
August 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28768503/comparison-of-low-density-and-high-density-pedicle-screw-instrumentation-in-lenke-1-adolescent-idiopathic-scoliosis
#16
Mingkui Shen, Honghui Jiang, Ming Luo, Wengang Wang, Ning Li, Lulu Wang, Lei Xia
BACKGROUND: The correlation between implant density and deformity correction has not yet led to a precise conclusion in adolescent idiopathic scoliosis (AIS). The aim of this study was to evaluate the effects of low density (LD) and high density (HD) pedicle screw instrumentation in terms of the clinical, radiological and Scoliosis Research Society (SRS)-22 outcomes in Lenke 1 AIS. METHODS: We retrospectively reviewed 62 consecutive Lenke 1 AIS patients who underwent posterior spinal arthrodesis using all-pedicle screw instrumentation with a minimum follow-up of 24 months...
August 2, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28767638/low-bone-mineral-density-is-a-significant-risk-for-proximal-junctional-failure-after-surgical-correction-of-adult-spinal-deformity-a-propensity-score-matched-analysis
#17
Mitsuru Yagi, Nobuyuki Fujita, Osahiko Tsuji, Narihito Nagoshi, Takashi Asazuma, Ken Ishii, Masaya Nakamura, Morio Matsumoto, Kota Watanabe
STUDY DESIGN: A propensity-matched comparison of risk factors for proximal junctional failure (PJF), which is a symptomatic proximal junctional kyphosis developing after corrective surgery for adult spinal deformity (ASD). OBJECTIVE: To elucidate the role of bone strength for developing PJF. SUMMARY OF BACKGROUND DATA: PJF, a devastating complication of corrective surgery for ASD, often recurs even after revision surgery. Most studies of risk factors for PJF are retrospective and have a selection bias in surgical strategy, making it difficult to identify modifiable PJF risk factors...
August 1, 2017: Spine
https://www.readbyqxmd.com/read/28767623/spinopelvic-changes-based-on-the-simplified-srs-schwab-adult-spinal-deformity-classification-relationships-with-disability-and-health-related-quality-of-life-in-adult-patients-with-prolonged-degenerative-spinal-disorders
#18
Kati Kyrölä, Jussi Repo, Jukka-Pekka Mecklin, Jari Ylinen, Hannu Kautiainen, Arja Häkkinen
STUDY DESIGN: Cross-sectional, observational study. OBJECTIVE: To study the occurrence of sagittal malalignment, the adaptability of a simplified sagittal modifiers grading of the Scoliosis Research Society (SRS)-Schwab adult spinal deformity classification (ASD), and the deformity-specific SRS questionnaire version 30 (SRS-30) in an unselected adult cohort with symptomatic degenerative spinal disorders. SUMMARY OF BACKGROUND DATA: The sagittal modifiers of the SRS-Schwab ASD classification correlate with health-related quality of life (HRQoL) measures in patients with ASD...
August 1, 2017: Spine
https://www.readbyqxmd.com/read/28765807/the-influence-of-lordotic-cages-on-creating-sagittal-balance-in-the-cmis-treatment-of-adult-spinal-deformity
#19
Neel Anand, Ryan B Cohen, Jason Cohen, Babak Kahndehroo, Sheila Kahwaty, Eli Baron
BACKGROUND: CMIS techniques are heavily dependent on placement of lateral interbody cages. Cages with an increased lordotic angle are being advocated to improve segmental lordosis and SVA. We assessed the segmental lordosis achieved with the individual cages. We further studied three variables and the effect each had on segmental lordosis: the lordosis angle of the cage, the position of the cage in the intervertebral space, and the level that it has been placed. METHODS: This is a retrospective study of 66 consecutive patients who underwent lateral interbody fusion using lordotic cages as part of CMIS correction of scoliosis from June 2012 to January 2016...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765802/clinical-gait-analysis-on-a-patient-undergoing-surgical-correction-of-kyphosis-from-severe-ankylosing-spondylitis
#20
Ram Haddas, Theodore Belanger
BACKGROUND: Ankylosing spondylitis (AS) is a chronic inflammatory disease primarily affecting the axial skeleton, including the sacroiliac joints, costovertebral joints, and the spine. Patients with AS found to have an alter gait pattern. The purpose of this study was to investigate biomechanical alterations in gait after surgical correction in a patient with severe kyphosis from AS. METHODS: A case report in controlled laboratory study, a pretest-posttest design...
2017: International Journal of Spine Surgery
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