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Katarzyna Barczyk-Pawelec, Sipko Tomasz
Evidence is limited regarding the regional changes in spinal posture after self-correction. The aim of the present study was to evaluate whether active self-correction improved standing and sitting spinal posture. Photogrammetry was used to assess regional spinal curvatures and vertical global spine orientation (GSO) in 42 asymptotic women aged 20-24 years. Upper thoracic spine angle and GSO increased in response to self-correction, while the thoracolumbar and lumbosacral angles decreased. Self-correction in the standing position resulted in decreased inclination of the upper thoracic and thoracolumbar spinal angles...
October 4, 2016: Women & Health
Chengjie Xiong, Michael D Daubs, Trevor P Scott, Kevin H Phan, Akinobu Suzuki, Monchai Ruangchainikom, Allison K Roe, Bayan Aghdasi, Yanlin Tan, Jeffrey C Wang
PURPOSE: The purpose of this study was to examine the movement of the spinal cord and its relationship to the spinal canal in patients with mild spondylosis using kinetic magnetic resonance imaging (kMRI). METHODS: Weight-bearing, multiposition kMRI was performed on symptomatic patients through a full range of flexion-extension. A total of 52 study patients were selected based on the C2-C7 Cobb angle of sagittal alignment: lordotic (from 30 to 45 degrees). We evaluated dynamic changes in different parameters from flexion-extension: spinal canal diameter (CD), spinal cord diameter (SCD), space available for the cord, anterior space available for the cord (ASAC), posterior space available for the cord (PSAC), average distance between the anterior canal and the cord (d-value), and global angle for the spinal canal and cord...
September 27, 2016: Clinical Spine Surgery
Fei Wang, Xiao-Yi Zhou, Xi-Ming Xu, Yi-Lin Yang, Xiao-Dong Zhu, Yu-Shu Bai, Xian-Zhao Wei, Ming Li
STUDY DESIGN: A retrospective clinical and radiographic study. OBJECTIVE: To analyze the radiographic change in CSA and identify the possible factors influencing the postoperative CSA in selective posterior TL/L curve correction. SUMMARY OF BACKGROUND DATA: The correlation between the CSA and thoracic sagittal alignment (TSA) is a well-recognized phenomenon in patients with thoracic idiopathic scoliosis. However, little has been published about the influence of thoracolumbar/lumbar (TL/L) curve instrumentation on CSA...
September 23, 2016: Spine
Nihat Acar, Ahmet Karakasli, Ahmet A Karaarslan, Mehmet Hilal Ozcanhan, Fatih Ertem, Mehmet Erduran
OBJECTIVE: Rod-screw fixation systems are widely used for spinal instrumentation. Although many biomechanical studies on rod-screw systems have been carried out, but the effects of rod contouring on the construct strength is still not very well defined in the literature. This work examines the mechanical impact of straight, 20° kyphotic, and 20° lordotic rod contouring on rod-screw fixation systems, by forming a corpectomy model. METHODS: The corpectomy groups were prepared using ultra-high molecular weight polyethylene samples...
September 2016: Journal of Korean Neurosurgical Society
Fusako Sato, Mamiko Odani, Yusuke Miyazaki, Kunio Yamazaki, Jonas Östh, Mats Svensson
OBJECTIVE: The aim of this study was to investigate the whole spine alignment in automotive seated postures for both genders and effects of the spinal alignment patterns on cervical vertebral motion in rear impact using a human Finite Element (FE) model. METHODS: Image data of 8 female and 7 male subjects in a seated posture acquired by an upright open MRI system were utilized. Spinal alignment was determined from the centers of the vertebrae and average spinal alignment patterns for both genders were estimated by Multi Dimensional Scaling (MDS)...
August 30, 2016: Traffic Injury Prevention
Taigo Inada, Takeo Furuya, Koshiro Kamiya, Mitsutoshi Ota, Satoshi Maki, Takane Suzuki, Kazuhisa Takahashi, Masashi Yamazaki, Masaaki Aramomi, Chikato Mannoji, Masao Koda
STUDY DESIGN: Retrospective case series. PURPOSE: To elucidate the impact of postoperative occiput-C2 (O-C2) angle change on subaxial cervical alignment. OVERVIEW OF LITERATURE: In the case of occipito-upper cervical fixation surgery, it is recommended that the O-C2 angle should be set larger than the preoperative value postoperatively. METHODS: The present study included 17 patients who underwent occipito-upper cervical spine (above C4) posterior fixation surgery for atlantoaxial subluxation of various etiologies...
August 2016: Asian Spine Journal
Mark P Mooney, Jocelyn M Shand, Anne Burrows, Timothy D Smith, John F Caccamese, Gregory M Cooper, James J Cray, James Gilbert, Bernard J Costello, Joseph E Losee, Amr M Moursi, Michael I Siegel
OBJECTIVES:   An overexpression of Tgf-β2 leads to calvarial hyperostosis and suture fusion in individuals with craniosynostosis. Inhibition of Tgf-β2 may help rescue fusing sutures and restore normal growth. The present study was designed to test this hypothesis. DESIGN:   Twenty-eight New Zealand White rabbits with delayed-onset coronal synostosis had radiopaque markers placed on either side of the coronal sutures at 10 days of age. The rabbits were randomly assigned to: (1) sham control rabbits (n = 10), (2) rabbits with control IgG (100 μg/suture) delivered in a collagen vehicle (n = 9), and (3) rabbits with Tgf-β2 neutralizing antibody (100 μg/suture) delivered in a collagen vehicle (n = 9)...
August 9, 2016: Cleft Palate-craniofacial Journal
Kenichiro Sakai, Toshitaka Yoshii, Takashi Hirai, Yoshiyasu Arai, Kenichi Shinomiya, Atsushi Okawa
PURPOSE: Cervical sagittal balance has received increased attention as an important determinant of radiological and clinical outcomes. However, no prospective studies have compared the impact of cervical sagittal balance between anterior and posterior surgeries. We previously conducted a prospective study comparing anterior decompression with fusion (ADF) and laminoplasty (LAMP) for degenerative cervical myelopathy (DCM) and reported; however, analysis of cervical alignment within the concept of sagittal balance has yet to be performed, because that concept has recently been proposed...
July 29, 2016: European Spine Journal
Sadegh Naserkhaki, Jacob L Jaremko, Marwan El-Rich
There is a large, at times contradictory, body of research relating spinal curvature to Low Back Pain (LBP). Mechanical load is considered as important factor in LBP etiology. Geometry of the spinal structures and sagittal curvature of the lumbar spine govern its mechanical behavior. Thus, understanding how inter-individual geometry particularly sagittal curvature variation affects the spinal load-sharing becomes of high importance in LBP assessment. This study calculated and compared kinematics and load-sharing in three ligamentous lumbosacral spines: one hypo-lordotic (Hypo-L) with low lordosis, one normal-lordotic (Norm-L) with normal lordosis, and one hyper-lordotic (Hyper-L) with high lordosis in flexed and extended postures using 3D nonlinear Finite Element (FE) modeling...
September 6, 2016: Journal of Biomechanics
Chen Liang, Jianmin Sun, Xingang Cui, Zhensong Jiang, Wen Zhang, Tao Li
BACKGROUND: Spinal sagittal imbalance is a widely acknowledged problem, but there is insufficient knowledge regarding its occurrence. In some patients with lumbar disc herniation (LDH), their symptom is similar to spinal sagittal imbalance. The aim of this study is to illustrate the spinopelvic sagittal characteristics and identity the role of spinal musculature in the mechanism of sagittal imbalance in patients with LDH. METHODS: Twenty-five adults with spinal sagittal imbalance who initially came to our clinic for treatment of LDH, followed by posterior discectomy were reviewed...
2016: BMC Musculoskeletal Disorders
Hakan Serhat Yanik, Ismail Emre Ketenci, Sevki Erdem
STUDY DESIGN: Retrospective analysis of cervical sagittal alignment (CSA) in Lenke 3C and 6C adolescent idiopathic scoliosis (AIS) OBJECTIVE.: To evaluate CSA according upper instrumented vertebra (UIV) level SUMMARY OF BACKGROUND DATA.: Hypokyphotic effect of extensive fusions of Lenke 3C and 6C curves on thoracic spine leads to kyphotic changes in cervical region. No study has evaluated the cervical sagittal alignment in these patients according to UIV level. METHODS: A total of 55 Lenke 3C and 6C AIS patients that underwent posterior fusion with pedicle screw instrumentation were recruited in this study...
July 18, 2016: Spine
Sang-Hun Lee, Ki-Tack Kim, Jung-Hee Lee, Kyung Chung Kang, Soo-Jin Jang, Sang-Phil Hwang, Kyung Tack Yoon
STUDY DESIGN: A retrospective study OBJECTIVE.: To present a novel, two-stage (posterior and anterior-posterior [P-AP] 540°) procedure for extensive cervical ossification of the longitudinal ligament (OPLL) with kyphotic deformity SUMMARY OF BACKGROUND DATA.: The optimal surgical strategy for extensive cervical OPLL remains a controversial issue. Neurological injury and dural defect are complications of anterior surgery, while a posterior surgery can lead to poor clinical outcomes related to incomplete decompression...
July 18, 2016: Spine
Won-Suh Choi, Jin-Sung Kim, Kyeong-Sik Ryu, Jung-Woo Hur, Ji-Hoon Seong
Background. Minimally invasive spinal transforaminal lumbar interbody fusion (MIS-TLIF) at L5-S1 is technically more demanding than it is at other levels because of the anatomical and biomechanical traits. Objective. To determine the clinical and radiological outcomes of MIS-TLIF for treatment of single-level spinal stenosis low-grade isthmic or degenerative spondylolisthesis at L5-S1. Methods. Radiological data and electronic medical records of patients who underwent MIS-TLIF between May 2012 and December 2014 were reviewed...
2016: BioMed Research International
Jae-Heon Lim, Woon-Su Cho, Seong-Jin Lee, Chi-Bok Park, Jang-Sung Park
[Purpose] This study aimed to determine if the velocity of mechanical horseback-riding training can improve spinal alignment in young adults. [Subjects and Methods] Thirty-six subjects were enrolled in this study. The subjects were randomly allocated into high-, moderate-, and low-velocity mechanical horseback-riding training groups. All participants completed one 20-minute session per day, 3 days per week, for 6 weeks. The evaluation was performed before and 6 weeks after the training intervention. The spinal alignment was measured by a Formetric III device...
June 2016: Journal of Physical Therapy Science
Majid Reza Farrokhi, Fariborz Ghaffarpasand, Mehdi Khani, Mehrnaz Gholami
Cervical spondylotic myelopathy (CSM) is the most common progressive degenerative disease of the spine in geriatric population. Surgery remains the mainstay of the treatment in patients with CSM. The surgical approach should be based on cervical sagittal imbalance. In patients with effective cervical lordosis (fewer than 3 levels of ventral disease), the anterior cervical discectomy and fusion (ACDF) or arthroplasty is preferred. Patients with more than 3 levels of compression are generally treated by laminoplasty, especially with preserved lordotic curvature...
July 4, 2016: World Neurosurgery
Saher Abu-Leil, Yizhar Floman, Yigal Bronstein, Youssef Masharawi
PURPOSE: Most morphometric studies on lumbar degenerative spondylolisthesis (DS) have focused solely on the L4-L5 slipped level, neglecting the shape of the entire lumbar segments. The purpose of this study was to present a morphometric analysis of the entire lumbar IVDs and VBs in DS. METHODS: Out of 500 lumbar CTs, the first 100 CTs, 50 with DS at L4 and 50 age- and sex-matched control CTs, were randomly selected. All lumbar IVD and VB heights, widths, lengths and sagittal wedging as well as lumbar lordosis (LL) and sacral inclination (SI) were measured and relevant ratios calculated...
August 2016: European Spine Journal
Guoyun Bu, Feng Shuang, Gang Liu, Ye Wu, Shuxun Hou, Dongfeng Ren, Weilin Shang
OBJECTIVES: We designed a novel surgical strategy named one-stage selective discectomy combined with expansive hemilaminectomy (OSDEHL) which might theoretically reduce the postoperative complications of Cervical Spondylotic Myelopathy (CSM). The objectives of this study is to evaluate its efficacy and safety. METHODS: 62 patients with CSM were enrolled in this study. The procedure includes selective discectomy with fusion at 1 or 2 segments of maximal cord compression and expansive hemilaminectomy on the symptomatic or severe side of the body...
June 20, 2016: World Neurosurgery
Ana E Rodríguez-Soto, David B Berry, Laura Palombo, Emily Valaik, Karen R Kelly, Samuel R Ward
STUDY DESIGN: Repeated measures. OBJECTIVE: The purpose of this study was to quantify the effect of operationally relevant loads and distributions on lumbar spine (LS) in a group of active-duty Marines. SUMMARY OF BACKGROUND DATA: Low back pain has been associated with heavy load carriage among military personnel. Although there are data describing the LS posture in response to load, the effect of varying load characteristics on LS posture remains unknown...
June 15, 2016: Spine
Mieke Dolphens, Stijn Vansteelandt, Barbara Cagnie, Andry Vleeming, Jo Nijs, Guy Vanderstraeten, Lieven Danneels
PURPOSE: To investigate the factors related to the 1-month period prevalence of low back pain (LBP), neck pain (NP) and thoracic spine pain (TSP) in young adolescents, thereby considering potential correlates from the physical, sociodemographic, lifestyle, psychosocial and comorbid pain domains. METHODS: In this cross-sectional baseline study, 69 factors potentially associated with spinal pain were assessed among 842 healthy adolescents before pubertal peak growth...
September 2016: European Spine Journal
Salih Gulsen
BACKGROUND: Loss of cervical lordosis is a significant factor in the development of degeneration of the spine with aging. This degenerative changings of the cervical spine would cause pressure effect on the cervical root and/or medulla spinalis. AIM: Our goal is to understand the effect of the PEEK cage on cervical lordosis in the early postoperative period. Also, to interpret the effects of one- level, two- level, three-level and four- level disc pathologies on cervical lordosis...
June 15, 2015: Open Access Macedonian Journal of Medical Sciences
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