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https://www.readbyqxmd.com/read/28441314/radiologic-parameters-can-affect-the-preoperative-decision-making-of-three-column-spinal-osteotomies-in-the-treatment-of-severe-and-stiff-kyhposcoliosis
#1
Hengwei Fan, Xueshi Li, Zifang Huang, Wenyuan Sui, Jingfan Yang, Yaolong Deng, Chongwen Wang, Chuandong Lang, Junlin Yang
STUDY DESIGN: Retrospective analysis. OBJECTIVE: To evaluate radiologic parameters affect spine surgeon's osteotomy choice on patients with severe and stiff thoracic kyphoscoliosis. SUMMARY OF BACKGROUD DATA: Three-column osteotomies were developed to address severe and stiff kyphoscolisis. Current choice on osteotomies based on the morphology of kyphosis, global balance and locations of the main curvature, however, quantitative basis for decision-making is still lacking...
April 24, 2017: Spine
https://www.readbyqxmd.com/read/28441308/factors-associated-with-the-development-of-and-revision-for-proximal-junctional-kyphosis-in-440-consecutive-adult-spinal-deformity-patients
#2
Fred H Nicholls, Junseok Bae, Alexander A Theologis, Murat S Eksi, Christopher P Ames, Sigurd H Berven, Shane Burch, Bobby K Tay, Vedat Deviren
STUDY DESIGN: Retrospective review of prospectively collected data OBJECTIVE.: The aim of this study was to examine which radiographic parameters and surgical strategies are most closely associated with proximal junctional kyphosis (PJK) after adult spinal deformity (ASD) surgery, the need for revision surgery for PJK, and whether these differ based on the upper instrumented vertebra (UIV). SUMMARY OF BACKGROUND DATA: Multiple parameters are considered when planning correction of ASD...
April 24, 2017: Spine
https://www.readbyqxmd.com/read/28441306/orientation-of-the-upper-most-instrumented-segment-influences-proximal-junctional-disease-following-adult-spinal-deformity-surgery
#3
Renaud Lafage, Breton G Line, Sachin Gupta, Barthelemy Liabaud, Frank Schwab, Justin S Smith, Jeffrey L Gum, Christopher P Ames, Richard Hostin, Gregory M Mundis, Han Jo Kim, Shay Bess, Eric Klineberg, Virginie Lafage
STUDY DESIGN: Retrospective review of a prospective database. OBJECTIVE: To define the role of sagittal orientation of the construct at the upper instrumented levels in the development of proximal junctional kyphosis (PJK) in adult spinal deformity (ASD) patients. SUMMARY OF BACKGROUND DATA: PJK following ASD surgery remains challenging. The final alignment of the upper instrumented vertebral segments has been proposed as a risk factor for PJK, but has not been fully investigated...
April 24, 2017: Spine
https://www.readbyqxmd.com/read/28439703/the-impact-of-direct-vertebral-rotation-dvr-on-radiographic-outcome-in-surgical-correction-of-idiopathic-scoliosis
#4
Wiktor Urbanski, Michal J Wolanczyk, Wojciech Jurasz, Miroslaw Kulej, Piotr Morasiewicz, Szymon Lukasz Dragan, Marek Sasiadek, Szymon Feliks Dragan
INTRODUCTION: Recent developments of spinal instruments allow to address nearly all components of idiopathic scoliosis. Direct vertebral rotation (DVR) maneuver was introduced to correct apical axial vertebral rotation. It is however still not well established how efficiently DVR affects results of scoliosis correction. The object of the study was to evaluate en bloc apical vertebral rotation (DVR) and its impact on coronal and sagittal correction of the spine in patients undergoing surgical scoliosis treatment...
April 24, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28438449/ankylosing-spondylitis-increases-perioperative-and-postoperative-complications-after-total-hip-arthroplasty
#5
Daniel J Blizzard, Colin T Penrose, Charles Z Sheets, Thorsten M Seyler, Michael P Bolognesi, Christopher R Brown
BACKGROUND: Ankylosing spondylitis (AS) is a chronic autoimmune spondyloarthropathy that primarily affects the axial spine and hips. Progressive disease leads to pronounced spinal kyphosis, positive sagittal balance, and altered biomechanics. The purpose of this study is to determine the complication profile of patients with AS undergoing total hip arthroplasty (THA). METHODS: The Medicare sample was searched from 2005 to 2012 yielding 1006 patients with AS who subsequently underwent THA...
March 27, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28437352/effect-and-strategy-of-1-stage-interrupted-2-level-transpedicular-wedge-osteotomy-for-correcting-severe-kyphotic-deformities-in-ankylosing-spondylitis
#6
Yongfei Zhao, Yan Wang, Zheng Wang, Xuesong Zhang, Keya Mao, Yonggang Zhang
STUDY DESIGN: Prospective study. OBJECTIVE: To investigate the safety, outcome, and strategy of the 1-stage interrupted 2-level transpedicular wedge osteotomy for correcting the severe kyphotic deformity in ankylosing spondylitis (AS). SUMMARY OF BACKGROUND DATA: There has been a large series in the literature reporting on results of osteotomy for the correction of kyphotic deformity secondary to AS. However, few articles have reported, in detail, the plan, design, strategy, and effect of 1-stage interrupted 2-level transpedicular wedge osteotomy for the correction of severe kyphotic deformity in AS...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437348/the-relationship-between-cervical-degeneration-and-global-spinal-alignment-in-patients-with-adult-spinal-deformity
#7
Takahito Fujimori, Hai Le, William Schairer, Shinichi Inoue, Motoki Iwasaki, Takenori Oda, Serena S Hu
OBJECTIVES: To examine the relationship between cervical degeneration and spinal alignment by comparing patients with adult spinal deformity versus the control cohort. SUMMARY OF BACKGROUND DATA: The effect of degeneration on cervical alignment has been controversial. METHODS: Cervical and full-length spine radiographs of 57 patients with adult spinal deformity and 78 patients in the control group were reviewed. Adult spinal deformity was classified into 3 types based on the primary characteristics of the deformity: "Degenerative flatback" group, "Positive sagittal imbalance" group, and "Hyperthoracic kyphosis" group...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437347/effect-of-coronal-scoliotic-curvature-on-sagittal-spinal-shape-analysis-of-parameters-in-mature-adolescent-scoliosis-patients
#8
Jae-Young Hong, Keon-Woo Kim, Seung-Woo Suh, Si-Young Park, Jae-Hyuk Yang
STUDY DESIGN: A radiographic analysis with scoliosis patients. OBJECTIVES: To analyze correlations between sagittal spinal alignment and coronal scoliotic curvature. SUMMARY OF BACKGROUND DATA: Sagittal spinal alignment and scoliosis may have a significant relationship, and schematic analysis is needed. METHODS: The study group was comprised of 163 patients with adolescent idiopathic scoliosis. Subjects underwent anteroposterior and lateral radiographs of the whole spine including hip joints...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437346/correlations-between-sagittal-spinal-balance-and-quality-of-life-in-rheumatoid-arthritis
#9
Hong Seok Lee, Jung Sub Lee, Jong Ki Shin, Tae Sik Goh
STUDY DESIGN: Prospective study. OBJECTIVE: To identify relationships between spinopelvic parameters and health-related quality of life in rheumatoid arthritis (RA). SUMMARY OF BACKGROUND DATA: Little data are available on relationships between sagittal spinopelvic parameters and health-related quality of life in RA. MATERIALS AND METHODS: The study and control groups comprised 120 RA patients and 60 controls. All subjects underwent anteroposterior and lateral radiography of the whole spine, including hip joints, and all completed clinical questionnaires...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437344/comparison-of-the-posterior-vertebral-column-resection-with-the-expandable-cage-versus-the-nonexpandable-cage-in-thoracolumbar-angular-kyphosis
#10
Jung-Hee Lee, Hyun-Seok Oh, Jeong-Gyu Choi
STUDY DESIGN: This was a retrospective study. OBJECTIVE: To compare the radiographic and clinical results of anterior support with nonexpandable cage with those of expandable cage. SUMMARY OF BACKGROUND DATA: The goals of surgical treatment in patients with thoracolumbar angular kyphosis are to improve the neurological deficit through neural decompression, to restore the normal alignment by correction of deformity, and to stabilize the spinal column by arthrodesis...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437343/spinopelvic-alignment-by-different-surgical-methods-in-the-treatment-of-degenerative-sagittal-imbalance-of-the-lumbar-spine
#11
Dong-Gune Chang, Kee-Yong Ha, Young-Hoon Kim, Eun-Whan Lee
STUDY DESIGN: A retrospective comparative study. OBJECTIVE: To compare pedicle subtraction osteotomy (PSO) and iliac fixation (ILF) without osteotomy as methods of correcting lumbar spine deformities due to degenerative sagittal imbalance (DSI) through the evaluation of the changes in spinopelvic alignment. SUMMARY OF BACKGROUND DATA: Many papers have reported the surgical results after PSO and ILF for patients with fixed adult deformities...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437340/proximal-junctional-kyphosis-following-posterior-hemivertebra-resection-and-short-fusion-in-children-younger-than-10-years
#12
Yingsong Wang, Noriaki Kawakami, Taichi Tsuji, Tetsuya Ohara, Yoshitaka Suzuki, Toshiki Saito, Ayato Nohara, Ryoji Tauchi, Kazuki Kawakami
STUDY DESIGN: A retrospective study. OBJECTIVE: To investigate whether proximal junctional kyphosis (PJK) or obvious proximal junctional angle (PJA) changes in the sagittal plane develops following short fusion in children younger than 10 years of age with congenital scoliosis, and to investigate the possible risk factors. SUMMARY OF BACKGROUND DATA: PJK following long spinal fusion in adolescents and adults is a serious postoperative complication...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437338/ponte-osteotomy-during-dekyphosis-for-indirect-posterior-decompression-with-ossification-of-the-posterior-longitudinal-ligament-of-the-thoracic-spine
#13
Kei Ando, Shiro Imagama, Zenya Ito, Kazuyoshi Kobayashi, Junichi Ukai, Akio Muramoto, Ryuichi Shinjo, Tomohiro Matsumoto, Hiroaki Nakashima, Yukihiro Matsuyama, Naoki Ishiguro
STUDY DESIGN: Retrospective clinical study. PURPOSE: To investigate the outcomes after indirect posterior decompression and dekyphosis using multilevel Ponte osteotomies for ossification of the posterior longitudinal ligament (OPLL) of the thoracic spine. SUMMARY OF BACKGROUND DATA: There are no previous reports on the use of Ponte osteotomy to treat thoracic OPLL. METHODS: The subjects were 10 patients with an average age at surgery of 47 years, who underwent indirect posterior decompression and dekyphosis using multilevel Ponte osteotomies at our institute...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28430792/the-influence-of-sagittal-profile-alteration-and-final-lordosis-on-the-clinical-outcome-of-cervical-spondylotic-myelopathy-a-delta-omega-analysis
#14
Daniel Koeppen, Claudia Piepenbrock, Stefan Kroppenstedt, Mario Čabraja
PURPOSE: Decompression and maintaining or restoring a cervical lordosis are major goals in the surgical treatment of cervical spondylotic myelopathy (CSM). Numerous studies support the assumption that cervical lordosis is a key factor for neurological recovery and pain reduction. However, even kyphotic patients can be asymptomatic. The balance of the spine is subject of an increasing number of publications. The main purpose of the study was to evaluate the validity of lordotic alignment on the course of CSM and to set this parameter in context with well-validated tools, namely the modified Japanese Orthopaedic Association scoring system (mJOAS) and the visual analogue scale (VAS), to predict and measure the clinical outcome after surgery...
2017: PloS One
https://www.readbyqxmd.com/read/28428982/biomechanical-effect-of-pedicle-screw-distribution-in-ais-instrumentation-using-a-segmental-translation-technique-computer-modeling-and-simulation
#15
Xiaoyu Wang, A Noelle Larson, Dennis G Crandall, Stefan Parent, Hubert Labelle, Charles G T Ledonio, Carl-Eric Aubin
BACKGROUND: Efforts to select the appropriate number of implants in adolescent idiopathic scoliosis (AIS) instrumentation are hampered by a lack of biomechanical studies. The objective was to biomechanically evaluate screw density at different regions in the curve for AIS correction to test the hypothesis that alternative screw patterns do not compromise anticipated correction in AIS when using a segmental translation technique. METHODS: Instrumentation simulations were computationally performed for 10 AIS cases...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/28427980/comparative-study-between-cobalt-chrome-and-titanium-alloy-rods-for-multi-level-spinal-fusion-proximal-junctional-kyphosis-more-frequently-occurred-in-patients-having-cobalt-chrome-rods
#16
Sanghyun Han, Seung-Jae Hyun, Ki-Jeong Kim, Tae-Ahn Jahng, Hyun-Jib Kim
BACKGROUND: The use of titanium alloy (Ti) rods is frequently associated with rod fracture following spinal fixation. To address this issue, cobalt chrome (CoCr) rods-which are advantageous due to their greater strength and resistance to fatigue relative to Ti rods-have been introduced. The purpose of the present study was to compare radiographic outcomes following the use of Ti versus CoCr rods in a matched cohort of patients undergoing posterior spinal fusion for treatment of spinal instability...
April 17, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28427722/biomechanical-investigation-of-post-operative-c5-palsy-due-to-ossification-of-the-posterior-longitudinal-ligament-in-different-types-of-cervical-spinal-alignment
#17
Batbayar Khuyagbaatar, Kyungsoo Kim, Won Man Park, Yoon Hyuk Kim
Post-operative C5palsies are among the most common complications seen after cervical surgery for ossification of the posterior longitudinal ligament (OPLL). Although C5 palsy is a well-known complication of cervical spine surgery, its pathogenesis is poorly understood and depends on many other factors. In this study, a finite element model of the cervical spine and spinal cord-nerve roots complex structures was developed. The changes in stress in the cord and nerve roots, posterior shift of the spinal cord, and displacement and elongation of the nerve roots after laminectomy for cervical OPLL were analyzed for three different cervical sagittal alignments (lordosis, straight, and kyphosis)...
April 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28425068/analysis-of-cervical-sagittal-alignment-change-following-correction-of-thoracic-and-thoracolumbar-scheuermann-s-kyphosis
#18
Luigi Aurelio Nasto, Saggah Tarek Shalabi, Ana Belen Perez-Romera, Samiul Muquit, Amir Reza Ghasemi, Hossein Mehdian
PURPOSE: To analyse pre-operative and post-operative changes of cervical sagittal alignment (CSA) in Scheuermann's kyphosis (SK) patients. METHODS: 64 SK and 33 control patients were retrospectively reviewed. Whole spine X-rays obtained at pre-op, 3 months post-op and at latest follow-up were reviewed and ten separate CSA radiological parameters were measured. Patients were divided in three groups: thoracic SK (TK group, apex T6-T9, n = 40), thoracolumbar SK (TLK group, apex T10-T12, n = 24), and controls...
April 19, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28422833/correction-of-sagittal-imbalance-in-treatment-for-adult-degenerative-scoliosis-with-thoracic-lordosis-and-lumbar-kyphosis-a-case-report
#19
Tao Wang, Hui Wang, Lei Ma, Di Zhang, Wen-Yuan Ding
RATIONALE: Lumbar degenerative scoliosis (LDS) is a common spinal disease for senior citizens. However, LDS accompanied with thoracic lordosis and lumbar kyphosis (LK) is rare in clinic. No reports have reported LDS with thoracic lordosis and LK. PATIENT CONCERNS: A 54-year-old woman just complained about sever back pain without any radiculopathy and neurodeficit of low limb for 2 years, Visual Analogue Scale (VAS) for back pain was 9 points and x-ray showed adult LDS with lordosis angle of 10° from 5th thoracic to 12th thoracic (T5-T12) and LK angle of 20°...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28420562/progression-of-untreated-mild-thoracic-scheuermann-s-kyphosis%C3%A2-%C3%A2-radiographic-and-functional-assessment-after-mean-follow-up-of-46%C3%A2-years
#20
Leena Ristolainen, Jyrki A Kettunen, Urho M Kujala, Ari Heinonen, Dietrich Schlenzka
BACKGROUND: There is no data available on the radiographic development of the Scheuermann's deformity. Our purpose was to investigate radiographic deformity progression and the relation between kyphosis progression and clinical outcome in patients with untreated Scheuermann's kyphosis. METHODS: Thoracic kyphosis (Th4-Th12) was measured from standing lateral radiographs in 19 patients at baseline and after mean 46-year follow-up. Mean age at baseline was 19.2 and at follow-up 64...
April 15, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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