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Spinal deformity

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https://www.readbyqxmd.com/read/28548698/novel-porcine-experimental-model-of-severe-progressive-thoracic-scoliosis-with-compensatory-curves-induced-by-interpedicular-bent-rigid-temporary-tethering
#1
Carlos Barrios, José Miguel Lloris, Juan Alonso, Borja Maruenda, Jesús Burgos, Rafael Llombart-Blanco, Luis Gil, Viviana Bisbal
Using flexible tethering techniques, porcine models of experimental scoliosis have shown scoliotic curves with vertebral wedging but very limited axial rotation. The aim of this experimental work was to induce a severe progressive scoliosis in a growing porcine model for research purposes. A unilateral spinal bent rigid tether was anchored to two ipsilateral pedicle screws in eight pigs. The spinal tether was removed after 8 weeks. Ten weeks later, the animals were sacrificed. Conventional radiographs and 3D CT-scans were taken to evaluate changes in the alignment of the thoracic spine...
May 26, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28538597/surgical-management-of-thoracolumbar-kyphosis-in-patients-with-mucopolysaccharidosis-a-systematic-review
#2
Nicole Williams, Peter Cundy, Deborah Eastwood
STUDY DESIGN: Systematic Review OBJECTIVE.: To determine the indications and outcomes for surgical treatment of thoracolumbar kyphosis in patients with mucopolysaccharidoses (MPS) in order to define future studies. SUMMARY OF BACKGROUND DATA: Improvements in the medical treatment of MPS have increased lifespan and improved quality of life for many patients, but with no effect on thoracolumbar kyphosis. A greater number of these challenging patients may now be considered spinal surgical candidates...
May 22, 2017: Spine
https://www.readbyqxmd.com/read/28538595/after-posterior-fusions-for-adult-spinal-deformity-operative-time-is-more-predictive-of-perioperative-morbidity-rather-than-surgical-invasiveness-a-need-for-speed
#3
Andre M Samuel, Michael C Fu, Nidharshan S Anandasivam, Matthew L Webb, Adam M Lukasiewicz, Han Jo Kim, Jonathan N Grauer
STUDY DESIGN: Retrospective cohort study OBJECTIVE.: To determine the independent effects of operative time and surgical invasiveness on perioperative outcomes after posterior spinal fusions for adult spinal deformity. SUMMARY OF BACKGROUND DATA: Morbidity is high after posterior fusions for adult spinal deformity. While previous reports have demonstrated an association between perioperative outcomes and the extent of correction and fusion (number of posterior levels fused, pelvic fixation, combined anterior-posterior fusion), no study has looked at the independent effects of the surgical invasiveness after controlling for operative time...
May 22, 2017: Spine
https://www.readbyqxmd.com/read/28538444/changes-in-cervical-alignment-after-multilevel-schwab-grade-ii-thoracolumbar-osteotomies-for-adult-spinal-deformity
#4
George M Ghobrial, Nathan H Lebwohl, Barth A Green, Joseph P Gjolaj
STUDY DESIGN: Retrospective Cohort OBJECTIVE.: To describe changes in cervical alignment(CA) and deformity (CD) after multilevel Schwab Grade II Osteotomies for adult spinal deformity (ASD). SUMMARY OF BACKGROUND DATA: Reciprocal cervical and global changes after ASD surgery have not been previous described in the setting of multilevel osteotomy. METHODS: Patients with long-segment (> 5 levels) fusion and osteotomy for ASD were radiographically evaluated...
May 19, 2017: Spine
https://www.readbyqxmd.com/read/28538370/radiographic-anatomical-relationship-between-spinous-process-and-pedicle-in-thoracolumbar-and-lumbar-spine
#5
Xingang Cui, Guodong Wang
Pedicle screws are widely used in spinal surgeries, but it remains technically demanding to place. There are numerous studies on the anatomy of pedicle; however, there is very little insight on the relationship between the pedicle and the spinous process, which is an important part of the spinal posterior column.The aim of the study was to investigate the radiographic anatomical relationship between spinous processes and pedicles in the thoracolumbar and lumbar spine, in order to reveal a novel entrance point for pedicle screw insertion...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28534221/measuring-outcomes-in-adult-spinal-deformity-surgery-a-systematic-review-to-identify-current-strengths-weaknesses-and-gaps-in-patient-reported-outcome-measures
#6
REVIEW
Sayf S A Faraj, Miranda L van Hooff, Roderick M Holewijn, David W Polly, Tsjitske M Haanstra, Marinus de Kleuver
PURPOSE: Adult spinal deformity (ASD) causes severe disability, reduces overall quality of life, and results in a substantial societal burden of disease. As healthcare is becoming more value based, and to facilitate global benchmarking, it is critical to identify and standardize patient-reported outcome measures (PROMs). This study aims to identify the current strengths, weaknesses, and gaps in PROMs used for ASD. METHODS: Studies were included following a systematic search in multiple bibliographic databases between 2000 and 2015...
May 22, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28532908/the-safety-and-efficiency-of-pvcr-without-anterior-support-applied-in-treatment-of-yang-s-a-type-severe-thoracic-kyphoscoliosis
#7
Wen-Yuan Sui, Zi-Fang Huang, Yao-Long Deng, Heng-Wei Fan, Jing-Fan Yang, Fo-Bao Li, Jun-Lin Yang
OBJECT: To assess the clinical and radiographic outcomes of posterior vertebral column resection (PVCR) without anterior support in treatment of Yang's A type severe rigid thoracic kyphoscoliosis. METHODS: The records of 27 Yang's A type severe thoracic kyphoscoliosis patients treated with PVCR without anterior support from January 2010 to September 2013 were retrospectively analyzed. Intraoperative multimodal neurophysiological monitoring (IONM) (6 modes: Somatosensory evoked potential (SSEP), Motor evoked potential (MEP), Descending neurogenic evoked potential (DNEP), Spinal cord evoked potential (SCEP), and Electromyography, both triggered and free run EMG) was conducted in all patients...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28529002/isyqol-a-rasch-consistent-questionnaire-for-measuring-health-related-quality-of-life-in-adolescents-with-spinal-deformities
#8
Antonio Caronni, Luciana Sciumè, Sabrina Donzelli, Fabio Zaina, Stefano Negrini
BACKGROUND CONTEXT: - Spinal deformities are commonly associated with poor HRQOL. Several questionnaires (e.g. SRS-24 and SRS-22) have been developed to evaluate HRQOL in these conditions. In adults as well as during growth, the HRQOL is considered one of the most relevant outcomes of both conservative and surgical treatment. Rasch analysis is a powerful statistical technique for developing high quality and valid questionnaires. The SRS-24 and SRS-22 have been evaluated using the Rasch analysis, but showed poor measurement properties...
May 18, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28526267/neurological-heterotopic-ossification-current-understanding-and-future-directions
#9
Rhys D Brady, Sandy R Shultz, Stuart J McDonald, Terence J O'Brien
Neurological heterotopic ossification (NHO) involves the formation of bone in soft tissue following a neurological condition, of which the most common are brain and spinal cord injuries. NHO often forms around the hip, knee and shoulder joints, causing severe pain and joint deformation which is associated with significant morbidity and reduced quality of life. The cellular and molecular events that initiate NHO have been the focus of an increasing number of human and animal studies over the past decade, with this work largely driven by the need to unearth potential therapeutic interventions to prevent the formation of NHO...
May 16, 2017: Bone
https://www.readbyqxmd.com/read/28523382/adult-spinal-deformity-effectiveness-of-interbody-lordotic-cages-to-restore-disc-angle-and-spino-pelvic-parameters-through-completely-mini-invasive-trans-psoas-and-hybrid-approach
#10
Giuseppe Barone, Laura Scaramuzzo, Antonino Zagra, Fabrizio Giudici, Andrea Perna, Luca Proietti
PURPOSE: The aim of the study is to assess and quantify the effectiveness of interbody lordotic cages applied by trans-psoas approach to improve radiographic parameters, showing the differences between completely mini-invasive and hybrid approach. METHODS: We collected data of 65 patients affected by degenerative lumbar deformity/diseases and underwent mini-invasive lateral interbody fusion followed by percutaneous (group A, completely mini-invasive) or open (group B, hybrid) posterior instrumentation...
May 18, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28523278/chondrocyte-specific-knockout-of-tsc-1-leads-to-congenital-spinal-deformity-in-mice
#11
Cheng Yang, Yuhui Chen, Zhen Li, He Cao, Keming Chen, Pinglin Lai, Bo Yan, Bin Huang, Jiajun Tang, Shicai Fan, Daozhang Cai, Dadi Jin, Xiaochun Bai, Rongping Zhou
Congenital spinal deformity is the most severe clinical orthopedic issue worldwide. Among all the pathological processes of congenital spinal deformity, the imbalance of endochondral ossification is considered to be the most important developmental cause of spinal dysplasia. We established chondrocyte-specific TSC-1 knockout (KO) mice to overactivate the energy metabolic component, mammalian target of rapamycin complex 1 (mTORC1), and measured the spinal development by general, imaging, histological, and Western-blot assessments...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28522402/prophylactic-vertebral-cement-augmentation-at-the-uppermost-instrumented-vertebra-and-rostral-adjacent-vertebra-for-the-prevention-of-proximal-junctional-kyphosis-and-failure-following-long-segment-fusion-for-adult-spinal-deformity
#12
George M Ghobrial, Daniel G Eichberg, John Paul G Kolcun, Karthik Madhavan, Nathan H Lebwohl, Barth A Green, Joseph P Gjolaj
BACKGROUND CONTEXT: Proximal junctional kyphosis (PJK) and proximal junctional failure (PJF) are common problems after long segment (>5 levels) thoracolumbar instrumented fusions in the treatment of adult spinal deformity (ASD). No specific surgical strategy has definitively been shown to lower the risk of PJK as the result of a multifactorial etiology. PURPOSE: To assess the incidence of PJK and PJF in patients treated with prophylactic polymethylmethacrylate(PMMA) cement augmentation at the uppermost instrumented vertebrae(UIV) and rostral adjacent vertebrae(UIV+1)...
May 15, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28520623/the-sub-crestal-iliac-screw-a-technical-note-describing-a-free-hand-in-line-low-profile-iliac-screw-insertion-technique-to-avoid-side-connector-use-and-reduce-implant-complications
#13
Gabriel Liu, Muhammed Yaser Hasan, Hee-Kit Wong
STUDY-DESIGN: Case-series. OBJECTIVE: Report our modified iliac-screw insertion technique and its clinical outcomes. SUMMARY OF BACKGROUND DATA: Iliac-screws are one of the preferred methods for modern spinopelvic-fixation. However the technique is not without complications, predominantly due to iliac-screw head prominence, leading to pain and revisions. Conventional iliac-screw entry point is sited superficially at the posterior-superior-iliac-spine (PSIS) contributing to screw-head prominence...
May 17, 2017: Spine
https://www.readbyqxmd.com/read/28514262/infection-control-in-pediatric-spinal-deformity-surgery-a-systematic-and-critical-analysis-review
#14
R Justin Mistovich, Lloydine J Jacobs, Robert M Campbell, David A Spiegel, John M Flynn, Keith D Baldwin
No abstract text is available yet for this article.
May 16, 2017: JBJS Reviews
https://www.readbyqxmd.com/read/28507887/effectiveness-of-operative-and-nonoperative-care-for-adult-spinal-deformity-systematic-review-of-the-literature
#15
Alisson R Teles, Tobias A Mattei, Orlando Righesso, Asdrubal Falavigna
STUDY DESIGN: Systematic review. OBJECTIVE: There is a need for synthesizing data on effectiveness of treatments for patients with adult spinal deformity (ASD) due to its increasing prevalence and health care costs for these patients. The objective of this review was to estimate the effectiveness of surgery versus nonoperative care in patients with ASD. METHODS: A systematic review of articles in published in English using PubMed between 2005 and 2015...
April 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28507779/spinal-osteotomies-indications-limits-and-pitfalls
#16
REVIEW
Kamil Cagri Kose, Omer Bozduman, Ali Erkan Yenigul, Servet Igrek
The aims of spinal deformity surgery are to achieve balance, relieve pain and prevent recurrence or worsening of the deformity.The main types of osteotomies are the Smith-Petersen osteotomy (SPO), pedicle subtraction osteotomy (PSO), bone-disc-bone osteotomy (BDBO) and vertebral column resection (VCR), in order of increasing complexity.SPO is a posterior column osteotomy in which the posterior ligaments and the facet joints are removed and correction is performed through the disc space. A mobile anterior disc is essential...
March 2017: EFORT Open Rev
https://www.readbyqxmd.com/read/28506822/the-effect-of-prophylactic-vertebroplasty-on-the-incidence-of-proximal-junctional-kyphosis-and-proximal-junctional-failure-following-posterior-spinal-fusion-in-adult-spinal-deformity-a-5-year-follow-up-study
#17
Tina Raman, Emily Miller, Christopher T Martin, Khaled Kebaish
BACKGROUND CONTEXT: The incidence of proximal junctional kyphosis (PJK) ranges from 5-46% following adult spinal deformity (ASD) surgery. Approximately 66-76% of PJK occurs within 3 months of surgery. A subset of these patients, reportedly 26-47%, develop proximal junctional failure (PJF) within 6 months postoperatively. To date, there are no studies evaluating the impact of prophylactic vertebroplasty on PJK/PJF incidence at long term follow-up. PURPOSE: The purpose of this study is to evaluate the long term radiographic and clinical outcomes, and incidence of PJK and PJF, after prophylactic vertebroplasty for long segment thoracolumbar posterior spinal fusion...
May 12, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28505594/the-rheological-behavior-of-a-fast-setting-calcium-phosphate-bone-cement-and-its-dependence-on-deformation-conditions
#18
Erdem Şahin, Dilhan M Kalyon
Calcium phosphate cements are osteoconductive biomaterials that are widely used for bone repair and regeneration applications, including spinal fusion, vertebroplasty, khyphoplasty, cranioplasty and periodontal surgeries. The flow and deformation behavior (rheology) and injectability of the calcium phosphate bone cements to the treatment site are governed by the setting kinetics of the cement during which the initially flowable, viscous cement paste transforms into a rigid elastic solid. Here time-dependent development of the linear viscoelastic properties of a brushite-forming calcium phosphate cement are characterized and linked to the mechanism and kinetics of the setting reaction and to the injectability window available during the surgical applications of the cement...
May 10, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28503540/comparisons-of-incidence-of-spinal-and-lower-extremity-deformities-according-to-the-physical-characteristics-between-sports-major-and-nonmajor-college-students
#19
Jangwon Lee
This research was performed to identify the incidence of spinal and lower extremity deformity and to identify the relationship of the incidence between the physical characteristics. One hundred forty-seven Physical Education major students and 54 nonmajor students participated in this study. Data collecting was performed by questionnaire and visual postural evaluation. The incidences of genu varus (P<0.00001), genu recurvatum (P=0.0007), forward head (P<0.00001), lordosis (P<0.00001), and scoliosis (P=0...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28502881/multilevel-schwab-grade-ii-osteotomies-for-sagittal-plane-correction-in-the-management-of-adult-spinal-deformity
#20
George M Ghobrial, Nathan H Lebwohl, Barth A Green, Joseph P Gjolaj
BACKGROUND CONTEXT: Prior reports have compared posterior column osteotomies to pedicle subtraction osteotomies in terms of utility for correcting fixed sagittal imbalance in adolescent patients with deformity. No prior reports have described the use of multilevel Smith-Petersen Osteotomies (SPOs) alone for surgical correction in the adult spinal deformity (ASD) population. PURPOSE: To determine the utility of multilevel Smith-Petersen Osteotomies (SPOs) in the management of global sagittal imbalance in adult spinal deformity (ASD) patients...
May 11, 2017: Spine Journal: Official Journal of the North American Spine Society
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