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Spine Deformity

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https://www.readbyqxmd.com/read/28038697/correction-of-spinal-deformity-on-a-lung-transplantation-recipient
#1
José Vicente Andrés Peiró, Joan Bagó Granell, Montserrat Feliu Moret, Antonio Moreno Galdó
BACKGROUND: The coexistence of lung disease and scoliosis entails a dramatic situation. There are no papers reporting scoliosis surgery in patients who suffered lung transplantation. PURPOSE: To describe the case of a patient who underwent surgery to correct progressive spinal deformity after two consecutive lung transplants. STUDY DESIGN: Case report, including review of patient records, imaging and pulmonary function tests, and literature review...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038696/predictors-for-postoperative-shoulder-balance-in-lenke-1-adolescent-idiopathic-scoliosis-a-prospective-cohort-study
#2
Alberto O Gotfryd, Maria Fernanda Silber Caffaro, Robert Meves, Osmar Avanzi
STUDY DESIGN: Prospective cohort. OBJECTIVES: To determine the predictors of the shoulder balance after main thoracic (MT) fusion in patients with Lenke 1 adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA: Imbalanced shoulders are a major cause of dissatisfaction in AIS patients. In Lenke 1 curves, MT curve fusion is supposed to lead to spontaneous correction of the proximal thoracic (PT) curve and thereby promote shoulder balance...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038695/national-trends-in-the-surgical-management-of-adolescent-idiopathic-scoliosis-analysis-of-a-national-estimate-of-60-108-children-from-the-national-inpatient-sample-over-a-13-year-time-period-in-the-united-states
#3
Alexander A Theologis, David C Sing, Faraaz Chekeni, Mohammad Diab
STUDY DESIGN: Analysis of Nationwide Inpatient Sample (NIS). OBJECTIVE: Evaluate evolution of operative treatment of adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA: Spinal surgery is one of the most rapidly evolving branches of surgery. Changes in AIS operations are incompletely defined. METHODS: Children (10-18 years) with ICD-9 diagnosis of idiopathic scoliosis who underwent thoracic and/or lumbar spinal fusion identified in the NIS (1998-2011) were analyzed...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038694/is-the-superior-articular-process-a-reliable-landmark-for-determining-the-transverse-plane-angulation-of-thoracic-pedicles-in-patients-with-adolescent-idiopathic-scoliosis
#4
Ogi Stevanovic, Alec Ryan Hermanson, John Thomas Anderson
PURPOSE: To analyze the usefulness of the superior articular process (SAP) as an external landmark for determining the transverse plane angulation of thoracic pedicles in scoliotic spines. METHODS: Two investigators reviewed thoracic spine CT scans of 60 patients with adolescent idiopathic scoliosis. The gantry was adjusted to obtain axial images parallel to the superior endplate. Each investigator measured the Cobb angle of the thoracic curve and identified the apical vertebra...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038693/motivations-for-compliance-with-bracing-in-adolescent-idiopathic-scoliosis
#5
Elizabeth M Brigham, Douglas G Armstrong
STUDY DESIGN: Cross-sectional study. OBJECTIVE: To determine motivations for compliance with bracing among female patients with adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA: Bracing prevents the need for surgery for the majority of girls with AIS with curves of 20° to 40° and 2 or more years of growth remaining. The main obstacle to success is compliance. The factors that either promote or impede compliance previously have not been fully clarified...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038692/asymmetry-of-the-vertebral-body-and-pedicles-in-the-true-transverse-plane-in-adolescent-idiopathic-scoliosis-a-ct-based-study
#6
Rob C Brink, Tom P C Schlösser, Dino Colo, Koen L Vincken, Marijn van Stralen, Steve C N Hui, Winnie C W Chu, Jack C Y Cheng, René M Castelein
STUDY DESIGN: Cross-sectional. OBJECTIVES: To quantify the asymmetry of the vertebral bodies and pedicles in the true transverse plane in adolescent idiopathic scoliosis (AIS) and to compare this with normal anatomy. SUMMARY OF BACKGROUND DATA: There is an ongoing debate about the existence and magnitude of the vertebral body and pedicle asymmetry in AIS and whether this is an expression of a primary growth disturbance, or secondary to asymmetrical loading...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038691/strain-in-posterior-instrumentation-resulted-by-different-combinations-of-posterior-and-anterior-devices-for-long-spine-fusion-constructs
#7
Christopher J Kleck, Damian Illing, Emily M Lindley, Andriy Noshchenko, Vikas V Patel, Cameron Barton, Todd Baldini, Christopher M J Cain, Evalina L Burger
STUDY DESIGN: Clinically related experimental study. OBJECTIVE: Evaluation of strain in posterior low lumbar and spinopelvic instrumentation for multilevel fusion resulting from the impact of such mechanical factors as physiologic motion, different combinations of posterior and anterior instrumentation, and different techniques of interbody device implantation. SUMMARY OF BACKGROUND DATA: Currently different combinations of posterior and anterior instrumentation as well as surgical techniques are used for multilevel lumbar fusion...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038690/the-development-of-a-representative-porcine-early-onset-scoliosis-model-with-a-standalone-posterior-spinal-tether
#8
R Bogie, A K Roth, P C Willems, Vd W Weegen, J J Arts, L W van Rhijn
STUDY DESIGN: In vivo analysis in a porcine model. OBJECTIVES: To develop a porcine experimental scoliosis model representative of early-onset scoliosis (EOS) with the use of a radiopaque ultra-high molecular weight polyethylene (UHMWPE) posterior spinal tether. SUMMARY OF BACKGROUND DATA: Large animal experimental scoliosis models with substantial growth potential are needed to test new fusionless scoliosis correction techniques. Previously described scoliosis models involve rib procedures, which violate the thoracic cage and affect subsequent corrective procedures...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038689/outcomes-of-optimal-distraction-forces-and-frequencies-in-growth-rod-surgery-for-different-types-of-scoliotic-curves-an-in-silico-and-in%C3%A2-vitro-study
#9
Aakash Agarwal, Anand K Agarwal, Arvind Jayaswal, Vijay K Goel
OBJECTIVE: Analyze the effects of the distraction forces and frequencies on multiple representative scoliotic curves and to establish a relationship between high distraction forces and screw loosening. STUDY DESIGN: Multiple representative finite-element models of a juvenile scoliotic spine were used to study the effects of the magnitude and frequency of distraction on growth rods. METHODS: Simulation of 6 months of growth under various distraction forces to analyze the effects of distraction forces on the biomechanics of the scoliotic spine and growth rod instrumentation; simulation of 24 months of growth under various intervals of distraction to analyze the effects of the distraction interval on the propensity for rod fracture; in vitro study to assess screw loosening after 6 months...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038688/biomechanical-evaluation-of-a-growth-friendly-rod-construct
#10
Sarah Galvis, Josh Arnold, Erin Mannen, Benjamin Wong, Hadley Sis, Eileen Cadel, John Anderson, Dennis Anderson, Paul Arnold, Elizabeth Friis
BACKGROUND: Distraction-type rods mechanically stabilize the thorax and improve lung growth and function by applying distraction forces at the rib, spine, pelvis, or a combination of locations. However, the amount of stability the rods provide and the amount the thorax needs is unknown. METHODS: Five freshly frozen and thawed cadaveric thoracic spine specimens were tested for lateral bending, flexion/extension, and axial rotation in displacement control (1°/sec) to a load limit of ±5 Nm for five cycles after which a growth-friendly unilateral rod was placed in a simulated rib-to-lumbar attachment along the right side...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28038687/update-on-nlm-pubmed-status
#11
EDITORIAL
John E Lonstein
No abstract text is available yet for this article.
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/27927574/untreated-thoracic-curve-in-adult-idiopathic-scoliosis-what-are-patients-concerns
#12
Javier Pizones, Mar Pérez Martin-Buitrago, Francisco Javier Sánchez Perez-Grueso, Ferran Pellisé, Ahmet Alanay, Ibrahim Obeid, Frank Kleinstück, Emre R Acaroglu
STUDY DESIGN: Retrospective two-cohort comparative analysis of data collected prospectively. OBJECTIVES: To analyze a cohort of patients with untreated thoracic curves of an adult multicenter deformity database [European spine study group (ESSG)], describe patient characteristics and concerns, and establish the rate and motivations for surgical intervention. SUMMARY OF BACKGROUND DATA: Idiopathic thoracic curves have a significant clinical and socioeconomic impact during adolescence...
November 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927573/effect-of-surgical-fusion-on-volitional-weight-shifting-in-individuals-with-adolescent-idiopathic-scoliosis
#13
Nikhil T Kurapati, Joseph J Krzak, Adam Graf, Sahar Hassani, Sergey Tarima, Peter F Sturm, Kim Hammerberg, Purnendu Gupta, Gerald F Harris
STUDY DESIGN: Prospective. OBJECTIVES: The goals of this study were to (1) evaluate the differences in weightbearing symmetry between individuals with adolescent idiopathic scoliosis (AIS) and typically developing controls; (2) observe the effect of posterior spinal fusion and instrumentation (PSFI) on volitional weight-shifting at 1 and 2 years postoperatively; and (3) evaluate whether lowest instrumented fusion level (ie, lowest instrumented vertebra [LIV]) in PSFI has an effect on volitional weight-shifting...
November 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927572/the-spinopelvic-geometry-in-different-lenke-curve-types-of-adolescent-idiopathic-scoliosis
#14
M Farshad, S Catanzaro, S L Schmid
BACKGROUND: The Lenke classification is well established in differentiation of curve types in adolescent idiopathic scoliosis (AIS) and guides selection of fusion levels. However, to date, it has neglected the spinopelvic parameters that have been associated with compensatory mechanisms in balancing the human erect posture and adjacent segment problems after spinal fusion. The aim of this study was to investigate spinopelvic parameters in different types of AIS curves. MATERIAL AND METHODS: Preoperative whole-spine radiographs from 100 patients with AIS were reviewed and the curves were classified according to Lenke...
November 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927571/a-comparative-analysis-among-the-srs-m-m-nis-and-kid-databases-for-the-adolescent-idiopathic-scoliosis
#15
Nathan J Lee, Javier Z Guzman, Jun Kim, Branko Skovrlj, Christopher T Martin, Andrew J Pugely, Yubo Gao, John M Caridi, Sergio Mendoza-Lattes, Samuel K Cho
STUDY DESIGN: Retrospective cohort analysis. OBJECTIVES: A growing number of publications have utilized the Scoliosis Research Society (SRS) Morbidity and Mortality (M&M) database, but none have compared it to other large databases. The objective of this study was to compare SRS complications with those in administrative databases. SUMMARY OF BACKGROUND DATA: The Nationwide Inpatient Sample (NIS) and Kid's Inpatient Database (KID) captured a greater number of overall complications while the SRS M&M data provided a greater incidence of spine-related complications following adolescent idiopathic scoliosis (AIS) surgery...
November 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927570/exercise-tolerance-in-children-with-early-onset-scoliosis-growing-rod-treatment-graduates
#16
Kelly A Jeans, Charles E Johnston, Wilshaw R Stevens, Dong-Phuong Tran
STUDY DESIGN: Prospectively enrolled early-onset scoliosis (EOS) patients undergoing growing rod treatment, who have had no surgery for >1 year and/or have received definitive fusion (growing rod "graduates"). OBJECTIVES: To assess oxygen consumption during exercise and determine if a diminished conventional pulmonary function test (PFT) correlates with metabolic, pulmonary, and cardiovascular measures during exercise. SUMMARY OF BACKGROUND DATA: Based on clinical impression and sequential PFT values, EOS patients who have undergone extensive treatment are thought to have limited capacity during exercise...
November 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927569/complications-and-radiographic-outcomes-of-posterior-spinal-fusion-and-observation-in-patients-who-have-undergone-distraction-based-treatment-for-early-onset-scoliosis
#17
Jeffrey R Sawyer, Rodrigo Góes Medéa de Mendonça, Tara S Flynn, Amer F Samdani, Ron El-Hawary, Alan J Spurway, John T Smith, John B Emans, Tricia A St Hilaire, Stephen J Soufleris, Ryan P Murphy
STUDY DESIGN: Retrospective, multicenter. OBJECTIVES: To compare surgical and radiographic outcomes of early-onset scoliosis (EOS) patients who had stopped lengthening for ≥2 years without additional surgery to those who had posterior spinal fusion (PSF) at the end of lengthening. SUMMARY OF BACKGROUND DATA: Because of the risk of significant complications with PSF in patients with EOS, "watchful waiting" at the end of lengthening has been suggested as a viable alternative...
November 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927568/mris-are-less-accurate-tools-for-the-most-critically-worrisome-pedicles-compared-to-ct-scans
#18
Vishal Sarwahi, Terry Amaral, Stephen Wendolowski, Rachel Gecelter, Etan Sugarman, Yungtai Lo, Dan Wang, Beverly Thornhill
STUDY DESIGN: Retrospective review of magnetic resonance imaging (MRI) and computed tomographic (CT) scan imaging modalities. OBJECTIVE: To determine MRI's capability of identifying pedicle morphology. SUMMARY OF BACKGROUND DATA: Understanding pedicle morphology is important for accurate placement of pedicle screws. The gold standard modality to assess pedicle morphology is CT scan. However, CT scans carry the risk of radiation exposure. We have studied MRI as a potential alternative to CT scan...
November 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927567/probing-and-tapping-are-we-inserting-pedicle-screws-correctly
#19
Vishal Prasad, Addisu Mesfin, Robert Lee, Julie Reigrut, John Schmidt
PURPOSE: Although there are a significant number of research publications on the topic of bone morphology and the strength of bone, the clinical significance of a failed pedicle screw is often revision surgery and the potential for further postoperative complications; especially in elderly patients with osteoporotic bone. The purpose of this report is to quantify the mechanical strength of the foam-screw interface by assessing probe/pilot hole diameter and tap sizes using statistically relevant sample sizes under highly controlled test conditions...
November 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927566/the-development-of-thoracic-vertebral-sagittal-morphology-during-childhood
#20
Ozgur Dede, Kadir Büyükdogan, Halil Gökhan Demirkıran, Erhan Akpınar, Muharrem Yazıcı
STUDY DESIGN: This is a cross-sectional descriptive study objectives to describe normal development of thoracic vertebrae during childhood and document contribution of individual vertebral shape to the sagittal alignment. SUMMARY OF BACKGROUND DATA: Sagittal spinal alignment changes during growth. The changes in sagittal alignment during adolescent growth spurt as well as the individual shapes of thoracic vertebrae have been implicated as factors for the development of adolescent idiopathic scoliosis (AIS)...
November 2016: Spine Deformity
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