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Spinal Imbalance

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18 papers 25 to 100 followers
By Gu W
Masatoshi Teraguchi, Noriko Yoshimura, Hiroshi Hashizume, Shigeyuki Muraki, Hiroshi Yamada, Hiroyuki Oka, Akihito Minamide, Hiroyuki Nakagawa, Yuyu Ishimoto, Keiji Nagata, Ryohei Kagotani, Sakae Tanaka, Hiroshi Kawaguchi, Kozo Nakamura, Toru Akune, Munehito Yoshida
BACKGROUND CONTEXT: Disc degeneration (DD) reportedly causes low back pain (LBP) and is often observed concomitantly with end plate signal change (ESC) and/or Schmorl node (SN) on magnetic resonance imaging. PURPOSE: The purpose of this study was to examine the association between DD and LBP, considering ESC and/or SN presence, in a large population study. STUDY DESIGN/SETTING: Cross-sectional population-based study in two regions of Japan...
April 1, 2015: Spine Journal: Official Journal of the North American Spine Society
Kengo Fujii, Naohiro Kawamura, Masachika Ikegami, Gaku Niitsuma, Junichi Kunogi
STUDY DESIGN: A retrospective, radiographical study. OBJECTIVE: To evaluate short-term radiological changes in sagittal alignment after lumbar decompression without fusion for lumbar canal stenosis. SUMMARY OF BACKGROUND DATA: Although the importance of global sagittal balance is underscored recently, little is known about the changes in sagittal alignment after lumbar canal decompression. METHODS: We retrospectively reviewed 88 patients who underwent lumbar decompression without fusion at a single institution between November 2008 and May 2013, with a minimum follow-up of 5 months...
May 15, 2015: Spine
Devlin G Morrison, Amanda Chan, Doug Hill, Eric C Parent, Edmond H M Lou
PURPOSE: To investigate the accuracy and reliability of the Cobb angle, the spinous process angle (SPA), and apical vertebral rotation (AVR) for measuring adolescent idiopathic scoliosis (AIS), and to evaluate the correlations between these measurements. METHODS: A retrospective study of two sets of standing posteroanterior radiographs of patients with AIS was performed. The first set was 59 consecutive patients with AIS with Cobb angles <45° and the second set was 25 patients with Cobb angles >45°...
February 2015: European Spine Journal
Kunio Yokoyama, Masahiro Kawanishi, Makoto Yamada, Hidekazu Tanaka, Yutaka Ito, Shinji Kawabata, Toshihiko Kuroiwa
PURPOSE: The influence of vertebral cement augmentation on spinal sagittal balance is unknown. The present study aimed to analyze the changes in total spinal alignment after Kyphoplasty in VCF patients. METHODS: The study involved 21 VCF patients who underwent Kyphoplasty. In all patients, lateral radiographs of the entire spine were taken preoperatively and 1 month after surgery, to measure the pelvic incidence (PI), sacral slope (SS), pelvic tilt (PT), lumbar lordosis (LL), sagittal vertical axis (SVA), and spinosacral angle (SSA)...
April 2015: European Spine Journal
R Cecchinato, P Berjano, R Bassani, C Lamartina
INTRODUCTION: Proximal junctional kyphosis (PJK) of the cervicothoracic spine is a deformity that can affect patients who have undergone long thoracolumbar instrumented fusion. Preoperative hyperkyphosis of the thoracic spine and changes of more than 30° in lumbar lordosis are independent risk factors for the onset of PJK. METHODS: When PJK occurs in the cervicothoracic spine, extension of the fusion with eventual application of osteotomy techniques is frequently necessary to treat symptomatic patients or in case a neurological deficit occurs...
January 2015: European Spine Journal
Han Jo Kim, Chaiwat Piyaskulkaew, K Daniel Riew
STUDY DESIGN: Retrospective case controlled study. OBJECTIVE: To describe the amount of correction obtained with different types of osteotomies in the cervical spine when treating cervical deformity. SUMMARY OF BACKGROUND DATA: Although the corrective power of various osteotomies in the thoracic and lumbar spine are well described, there are no reports in the literature on the corrective capabilities of osteotomies in the cervical spine to guide preoperative planning for cervical and cervicothoracic deformities...
February 1, 2015: Spine
Alexander A Theologis, Ehsan Tabaraee, Haruki Funao, Justin S Smith, Shane Burch, Bobby Tay, Khaled Kebaish, Vedat Deviren, Christopher Ames
PURPOSE: To evaluate and compare early radiographic and clinical outcomes of lower cervical and upper thoracic three-column osteotomies (3CO) for cervicothoracic kyphosis correction. METHODS: Patients who underwent 3CO at the cervicothoracic junction at two institutions were retrospectively reviewed. Patients were divided into two groups: lower cervical osteotomy (LCO) and upper thoracic osteotomy (UTO: T1-T5). Operative data, radiographic alignment, peri-operative complications, and clinical outcomes were compared between the groups...
January 2015: European Spine Journal
Ibrahim Obeid, Louis Boissière, Jean-Marc Vital, Anouar Bourghli
INTRODUCTION: When a deformity involves more than one area of the spine, it becomes a multifocal deformity; such a deformity could either be extending on two adjacent segments, or be two separated deformities on two non-adjacent segments. MATERIALS AND METHODS: The surgical management of multifocal spinal deformities is challenging and must be done through a thorough preoperative planning where spinal and pelvic parameters should accurately be determined. Different strategies should be applied depending on the type of the multifocal deformity, the area involved, the angulation and stiffness of the spine in that area, and the presence of either a pure sagittal malalignment or a combined coronal and sagittal malalignment...
January 2015: European Spine Journal
Zhi-jian Sun, Gui-xing Qiu, Yu Zhao, Shi-gong Guo, Jian-guo Zhang, Jian-xiong Shen, Yi-Peng Wang, Hong Zhao, Shu-gang Li
PURPOSE: To investigate changes in thoracic dimensions (TDs) following repeated lengthening surgeries after dual growing rod treatment of early onset scoliosis and thereby its effect on thoracic growth. METHODS: All EOS patients treated with dual growing rod technique in Peking Union Medical College Hospital from June 2004 to June 2014 were retrospectively reviewed. Thoracic spine height (T1-T12), total spine height (T1-S1), maximal coronal chest width and pelvic inlet width (PIW) were measured on the posteroanterior X-ray images after initial growing rod insertion surgery and after each lengthening surgery...
July 2015: European Spine Journal
Cheng Wang, Kevin Bell, Michael McClincy, Lloydine Jacobs, Ozgur Dede, James Roach, Patrick Bosch
STUDY DESIGN: Biomechanical cadaver study. OBJECTIVE: To evaluate the relative effectiveness of Ponte osteotomies for spinal release in deformity correction. SUMMARY OF BACKGROUND DATA: Controversy exists as to the role of Ponte osteotomy in deformity correction surgery. Very little has been written about the biomechanical effects of Ponte osteotomy. Past biomechanical studies have been limited to application of forces through endplates, single functional units, or lack of comparison with anterior release...
February 1, 2015: Spine
Jian Dai, Xiaojuan Yu, Shushu Huang, Lu Fan, Guotai Zhu, Hailang Sun, Xiaoming Tang
PURPOSE: To investigate the relationship between sagittal spinal alignment and the incidence of vertebral fracture in patients with osteoporosis. METHODS: A cohort of 1,044 postmenopausal women with osteoporosis were prospectively observed for the incidence of lumbar vertebral fracture. Baseline characteristics of the subjects were recorded, including age, year post-menopause, body height and weight, lumbar spine BMD (LSBMD) and femoral neck BMD (FNBMD). Patients with radiologically diagnosed lumbar vertebral fractures were assigned to the fracture group, and 150 randomly selected participants were assigned to the non-fracture group...
April 2015: European Spine Journal
Jun Hu, Ming-liang Ji, Bang-ping Qian, Yong Qiu, Bin Wang, Yang Yu, Ze-Zhang Zhu, Jun Jiang
STUDY DESIGN: A retrospective radiographical study. OBJECTIVE: To construct a predictive model for pelvic tilt (PT) based on the sacrofemoral-pubic (SFP) angle in patients with thoracolumbar kyphosis secondary to ankylosing spondylitis (or AS). SUMMARY OF BACKGROUND DATA: PT is a key pelvic parameter in the regulation of spine sagittal alignment that can be used to plan the appropriate osteotomy angle in patients with AS with thoracolumbar kyphosis...
November 1, 2014: Spine
Bethany E Keenan, Maree T Izatt, Geoffrey N Askin, Robert D Labrom, Mark J Pearcy, Clayton J Adam
BACKGROUND: Supine imaging modalities provide valuable 3D information on scoliotic anatomy, but the altered spine geometry between the supine and standing positions affects the Cobb angle measurement. Previous studies report a mean 7°-10° Cobb angle increase from supine to standing, but none have reported the effect of endplate pre-selection or whether other parameters affect this Cobb angle difference. METHODS: Cobb angles from existing coronal radiographs were compared to those on existing low-dose CT scans taken within three months of the reference radiograph for a group of females with adolescent idiopathic scoliosis...
2014: Scoliosis
Zhijian Sun, Guixing Qiu, Yu Zhao, Shigong Guo, Yipeng Wang, Jianguo Zhang, Jianxiong Shen
PURPOSE: To analyze risk factors for an increase in proximal junctional angle (PJA) after posterior selective thoracolumbar/lumbar (TL/L) curve fusion in patients with adolescent idiopathic scoliosis (AIS). METHODS: AIS patients that underwent selective posterior TL/L curve fusion with a minimum of 2-year follow-up were identified. Demographic and radiographic data were collected before surgery, at first erect after surgery and at final follow-up. Multiple linear regression analysis was performed to determine the relation of PJA changes during follow-up and eight potential risk factors, including locations of upper instrumented vertebra (UIV), locations of lower instrumented vertebra (LIV), length of fusion segments, types of pedicle screw alignment, lumbar lordosis (LL) at first erect after surgery, LL changes before and after surgery, sagittal vertical axis (SVA) at first erect after surgery and SVA changes before and after surgery...
February 2015: European Spine Journal
Kris E Radcliff, Alexander D Neusner, Paul W Millhouse, James D Harrop, Christopher K Kepler, Mohammad R Rasouli, Todd J Albert, Alexander R Vaccaro
BACKGROUND CONTEXT: Surgical site infection (SSI) after spinal surgery can result in several serious secondary complications, such as pseudoarthrosis, neurological injury, paralysis, sepsis, and death. There is an increasing body of literature on risk factors, diagnosis, and specific intraoperative interventions, including attention to sterility of instrumentation, application of minimally invasive fusion techniques, intraoperative irrigation, and application of topical antibiotics, that hold the most promise for reduction of SSI...
February 1, 2015: Spine Journal: Official Journal of the North American Spine Society
Hui Xu, Yonggang Zhang, Yongfei Zhao, Xuesong Zhang, Songhua Xiao, Yan Wang
BACKGROUND CONTEXT: Single pedicle subtraction osteotomy (PSO) has been used to correct ankylosing spondylitis (AS) kyphosis successfully, but this approach seems insufficient to correct severe kyphosis. Two-level PSO has been attempted to correct advanced kyphosis in recent years. However, studies have not yet compared outcomes between single and double PSOs, and the indications to perform two-level PSO are unclear. PURPOSE: This study aimed to compare the radiologic and clinical outcomes between single- and two-level PSOs in correcting AS kyphosis...
February 1, 2015: Spine Journal: Official Journal of the North American Spine Society
Ting Wang, Dechun Wang, Yanan Cong, Chuqiang Yin, Shuzhong Li, Xiaoliang Chen
STUDY DESIGN: Retrospective study of a posterior approach for surgical treatment of thoracolumbar pseudarthrosis in ankylosing spondylitis (AS). OBJECTIVE: The aim of the current study was to report the surgical results of symptomatic thoracolumbar pseudarthrosis in AS through a posterior approach. SUMMARY OF BACKGROUND DATA: Spinal pseudarthrosis is a well known complication in AS. The patients may complicate with mechanical back pain, spinal deformity and sometimes neurological deficits...
September 8, 2014: Journal of Spinal Disorders & Techniques
Shengrong Lin, Feifei Zhou, Yu Sun, Zhongqiang Chen, Fengshan Zhang, Shengfa Pan
PURPOSE: The aim of this study was to investigate how the severity of operative invasion to the posterior muscular-ligament complex impacts postoperative cervical sagittal balance. MATERIALS AND METHODS: Ninety cases of open-door expansive laminoplasty due to cervical spondylotic myelopathy were reviewed. Fifty-three patients underwent laminoplasty with unilateral preservation of the muscular-ligament complex (unilateral elevation group). Thirty-seven patients underwent traditional open-door laminoplasty (bilateral elevation group)...
January 2015: European Spine Journal
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