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Sagittal balance

Che-Wei Hung, Ming-Fang Wu, Gwo-Fane Yu, Chin-Chu Ko, Cheng-Hsing Kao
PURPOSE: To analyze sagittal balance of the cervical spine after three operative methods for three consecutive levels. METHODS: A retrospective case selection and observational study was performed from December 2012 to December 2015: 20 patients underwent anterior cervical discectomy and fusion, 22 patients underwent hybrid surgery (HS), and 20 patients underwent total disc replacement (TDR). Perioperative parameters, clinical outcomes, and preoperative and postoperative sagittal parameters were recorded...
March 9, 2018: Clinical Neurology and Neurosurgery
Justin Paul, Shaleen Vira, Martin Quirno, Themistocles Protopsaltis
The sagittal plane is known to be important in correction of adult spinal deformity. When surgery is indicated, the surgeon is provided with several tools and techniques to restore balance. But proper use of these tools is essential to avoid harmful complications. This article examines these tools with a focus on lumbar lordosis and the lumbopelvic junction. Positioning, releases, osteotomies, and instrumentation are considered with special attention to the alignment measurements they affect.
March 2018: Bulletin of the Hospital for Joint Diseases
Rachid Madkouri, David Brauge, Anthony Vidon-Buthion, Elie Fahed, Klaus-Luc Mourier, Jacques Beaurain, Mickael Grelat
OBJECTIVE: The aim of this study was to evaluate modifications in static spinal status after posterior decompression surgery without fusion in patients with symptomatic central canal stenosis. MATERIAL & METHODS: From November 2014 to May 2016, 72 patients who underwent isolated decompression for lumbar spinal stenosis were prospectively enrolled in this monocentric study. All of the patients had lateral full-body x-rays using the EOS system (EOS Imaging, Paris, France) before surgery and after 12 months of follow-up...
March 9, 2018: World Neurosurgery
Michael Wilkinson, Alistair Ewen, Nicholas Caplan, David O'Leary, Neil Smith, Richard Stoneham, Lee Saxby
The effect of textured insoles on kinetics and kinematics of overground running was assessed. 16 male injury-free-recreational runners attended a single visit (age 23 ± 5 yrs; stature 1.78 ± 0.06 m; mass 72.6 ± 9.2 kg). Overground 15-m runs were completed in flat, canvas plimsolls both with and without textured insoles at self-selected velocity on an indoor track in an order that was balanced among participants. Average vertical loading rate and peak vertical force (Fpeak ) were captured by force platforms...
March 12, 2018: European Journal of Sport Science
Melvin C Makhni, Jamal N Shillingford, Joseph L Laratta, Seung-Jae Hyun, Yongjung J Kim
The prevalence of patients with adult spinal deformity (ASD) has been reported as high as 68%. ASD often leads to significant pain and disability. Recent emphasis has been placed on sagittal plane balance and restoring normal sagittal alignment with regards to the three dimensional deformity of ASD. Optimal sagittal alignment has been known to increase spinal biomechanical efficiency, reduce energy expenditure by maintaining a stable posture with improved load absorption, influence better bony union, and help to decelerate adjacent segment deterioration...
March 2018: Journal of Korean Neurosurgical Society
Mu Qiao, Jody A Feld, Jason R Franz
BACKGROUND: Older adults are more susceptible to balance perturbations during walking than young adults. However, we lack an individual joint-level understanding of how aging affects the neuromechanical strategies used to accommodate balance perturbations. RESEARCH QUESTION: We investigated gait phase-dependence in and aging effects on leg joint kinematic variability during walking with balance perturbations. We hypothesized that leg joint variability would: 1) vary across the gait cycle and 2) increase with balance perturbations...
February 21, 2018: Gait & Posture
A Tateen, J Bogert, H Koller, A Hempfing
BACKGROUND: Surgical correction of ASD can be challenging. The indication for surgery is individual and after specification of the therapeutic goals, detailed planning of the surgery is essential to achieve a good postoperative result. COMPLICATIONS AND INDICATION: The reasons for the comparatively high complication rate are well investigated and are often located at the lumbosacral junction. In addition to negative general factors like osteoporosis, especially undercorrection of the sagittal profile and insufficient lumbo-pelvic stabilization are causative...
March 5, 2018: Der Orthopäde
Turgut Akgül, Kerim Sarıyılmaz, Murat Korkmaz, Okan Özkunt, Özcan Kaya, Fatih Dikici
Study Design: Retrospective analysis of adolescent idiopathic scoliosis. Purpose: This study aimed to investigate the influence of distinct distal fusion levels on spinopelvic parameters in patients with adolescent idiopathic scoliosis (AIS) who underwent posterior instrumentation and fusion surgery. Overview of Literature: The distal fusion level selection in treatment of AIS is the one of milestone to effect on surgical outcome. Most of the paper focused on the coronal deformity correction and balance...
February 2018: Asian Spine Journal
Shaofu Wang, Jing Li, Guohua Lü, Bing Wang, Xiaobin Wang
PURPOSE: Hemivertebra of the cervical spine is a rare but complex spinal malformation. To our knowledge, only one publication describes excision of an upper-middle cervical (between C2 and C4) hemivertebra. We present our experience with two cases of C3 hemivertebra resection and torticollis correction via a combined anterior-posterior-anterior surgical approach and short segment fixation. METHODS: Two 12-year-old patients with torticollis due to congenital C3 hemivertebra underwent surgery consisting of combined anterior vertebral body osteotomy, posterior element resection with segment instrumentation and deformity correction, and iliac bone graft reconstruction and fixation via an anterior approach...
February 28, 2018: European Spine Journal
Christopher M Sullivan
No abstract text is available yet for this article.
February 23, 2018: Clinical Orthopaedics and related Research
Yijian Zhang, Hao Liu, Huilin Yang, Bin Pi
PURPOSE: To compare the postoperative sagittal balance and occurrence of axial symptoms between anterior cervical corpectomy and fusion (ACCF) and anterior cervical discectomy and fusion (ACDF) for the treatment of two-level cervical spondylotic myelopathy (CSM). METHODS: A total of 71 consecutive patients who underwent ACCF or ACDF for two-level CSM in our institution from January 2014 to December 2016 were retrospectively reviewed. Of these patients, 30 (17 males, 13 females) were subjected to ACCF, and 41 (20 males, 21 females) were treated with ACDF...
February 24, 2018: International Orthopaedics
Silviu Sabou, Hossein Mehdian, Dritan Pasku, Luca Boriani, Nasir A Quraishi
PURPOSE: Ankylosing spondylitis (AS) can result in severe cervico-thoracic kyphotic deformity (CTKD). Few studies have addressed the relationship between cervico-thoracic osteotomies in AS and health-related quality of life scores. The aim of this study is to evaluate the impact of cervico-thoracic osteotomy (CTO) on improving quality of life for patients with fixed CTKD. METHODS: A database of all patients who underwent a CTO for CTKD in patients with AS was created...
February 22, 2018: European Spine Journal
Digna de Kam, Jolanda M B Roelofs, Alexander C H Geurts, Vivian Weerdesteyn
OBJECTIVE: To determine the predictive value of leg and trunk inclination angles at stepping-foot contact for the capacity to recover from a backward balance perturbation with a single step in people after stroke. METHODS: Twenty-four chronic stroke survivors and 21 healthy controls were included in a cross-sectional study. We studied reactive stepping responses by subjecting participants to multidirectional stance perturbations at different intensities on a translating platform...
2018: PloS One
Chenglei Liu, Chang Liu, Liping Si, Hao Shen, Qian Wang, Weiwu Yao
BACKGROUND: The importance of subchondral bone in the pathogenesis of osteoarthritis (OA) has drawn interest. PURPOSE: To investigate subregional trabecular bone microstructural features and to determine the relationship between cartilage and trabecular bone in the osteoarthritic human knee. STUDY TYPE: Prospective study. SUBJECTS: In all, 92 knees were enrolled and divided into three groups: without OA, mild OA, and severe OA...
February 16, 2018: Journal of Magnetic Resonance Imaging: JMRI
Jean-Marc Mac-Thiong, Stefan Parent, Julie Joncas, Soraya Barchi, Hubert Labelle
PURPOSE: Previous studies did not specifically assess the influence of proximal femoral angle (PFA) on sagittal balance in high-grade spondylolisthesis (HGS). In addition, the relationship between PFA and quality of life (QOL) remains unknown. This study determines if increased PFA is associated with decreased QOL and sagittal balance in lumbosacral HGS. METHODS: This retrospective case-control study was performed on a cohort of 56 normal subjects and 42 patients with HGS...
February 14, 2018: European Spine Journal
Xianda Gao, Linfeng Wang, Changzhi Yan, Yanlong Gao, Yong Shen
BACKGROUND The aim of this study was to identify the predictors of deterioration in sagittal balance in patients with adult scoliosis following long fusion arthrodesis to L5. MATERIAL AND METHODS A retrospective clinical study included 63 patients with adult scoliosis who underwent long fusion arthrodesis to L5, between February 2005 and May 2015. Radiological imaging values included the angle of lumbar lordosis (LL), and the angle of pelvic incidence (PI). The patients were divided into two cohorts, according to the threshold of average loss of sagittal vertical axis (SVA): a cohort with stable sagittal balance (SSB) and a cohort with deteriorated sagittal balance (DSB)...
February 14, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Ali K Ozturk, Patricia Zadnik Sullivan, Vincent Arlet
The importance of sagittal spinal balance and lumbopelvic parameters is now well understood. The popularization of various osteotomies, including Smith-Peterson, Ponte, and pedicle subtraction osteotomies (PSOs), as well as vertebral column resections, have greatly enhanced the spine surgeon's ability to recognize and effectively treat sagittal imbalance. Yet rare circumstances remain, most notably in distal kyphotic deformities and patients with extremely elevated pelvic incidences, where these techniques remain inadequate...
February 9, 2018: Journal of Neurosurgery. Spine
Kaku Barkoh, Joshua W Lucas, Larry Lee, Patrick C Hsieh, Jeffrey C Wang, Kevin Rolfe
PURPOSE: To review the current understanding and data of sagittal balance and alignment considerations in paraplegic patients. METHODS: A PubMed literature search was conducted to identify all relevant articles relating to sagittal alignment and sagittal balance considerations in paraplegic and spinal cord injury patients. RESULTS: While there are numerous studies and publications on sagittal balance in the ambulatory patient with spinal deformity or complex spine disorders, there is paucity of the literature on "normal" sagittal balance in the paraplegic patients...
February 8, 2018: European Spine Journal
Kuang-Ting Yeh, Ru-Ping Lee, Ing-Ho Chen, Tzai-Chiu Yu, Cheng-Huan Peng, Kuan-Lin Liu, Jen-Hung Wang, Wen-Tien Wu
BACKGROUND: Sagittal spinopelvic balance and proper sagittal alignment are important when planning corrective or reconstructive spinal surgery. Prior research suggests that people from different races and countries have moderate divergence; to the best of our knowledge, the population of Taiwan has not been studied with respect to this parameter. QUESTIONS/PURPOSES: To investigate normal age- and sex-related differences in whole-spine sagittal alignment and balance of asymptomatic adults without spinal disorders...
February 5, 2018: Clinical Orthopaedics and related Research
Kuan Wang, Zhen Deng, Hui-Hao Wang, Zheng-Yan Li, Wen-Xin Niu, Bo Chen, Ming-Cai Zhang, Wei-An Yuan, Hong-Sheng Zhan
OBJECTIVE: To analyze the relationship between position of head, cervical curvature type and associated cervical balance parameters in a neutral looking-forward posture. METHODS: Cervical lateral X-rays of 60 patients with cervical spondylosis were selected from January to December 2015. There were 22 males and 38 females with an average age of (35.5±10.9) years old. The measured parameters included cervical curvature type, McGregor slope, C2 lower end plate slope, T1 slope, center of gravity to C7 sagittal vertical offset (CG-C7 SVA), and C2 to C7 sagittal vertical offset (C2-C7 SVA)...
May 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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