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https://www.readbyqxmd.com/read/29353149/different-ways-to-balance-the-spine-in-sitting-muscle-activity-in-specific-postures-differs-between-individuals-with-and-without-a-history-of-back-pain-in-sitting
#1
Andrew P Claus, Julie A Hides, G Lorimer Moseley, Paul W Hodges
BACKGROUND: Previous research explored muscle activity in four distinct sitting postures with fine-wire electromyography, and found that lumbar multifidus muscle activity increased incrementally between sitting with flat thoracolumbar and lumbar regions, long thoracolumbar lordosis, or short lordosis confined to the lumbar region. This study used similar methods to explore whether people with a history of low back pain provoked by prolonged sitting used different patterns of trunk muscle activity in specific postures...
January 10, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29329787/outcomes-of-multisegmental-transforaminal-enlarged-decompression-plus-posterior-pedicle-screw-fixation-for-multilevel-lumbar-spinal-canal-stenosis-associated-with-lumbar-instability
#2
Chao Sun, Wei Ji Tian, Hui Xin Liu, Ping Guo Guan
PURPOSE: The aim of this study was to evaluate the clinical and radiologic results of multisegmental transforaminal enlarged decompression (TED) plus posterior pedicle screw fixation in the treatment of multilevel lumbar spinal canal stenosis (LSCS) with lumbar instability (MLSCSI). METHODS: 113 patients with MLSCSI underwent surgery were recruited in this study. All patients were suffering from symptoms typical of degenerative LSCS and treated with either TED plus fusion (TEDF group) or conventional laminectomy plus fusion (CLF group)...
January 9, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29315118/characteristics-of-cervical-spine-motion-in-different-types-of-cervical-alignment-kinematic-mri-study
#3
Kittipong Sessumpun, Permsak Paholpak, Kevork N Hindoyan, Koji Tamai, Thananit Sangkomkamhang, Zorica Buser, Jeffrey C Wang
STUDY DESIGN: Retrospective study. OBJECTIVE: To evaluate how each type of sagittal cervical alignment affects the motion of the upper and subaxial cervical spine using kinematic magnetic resonance imaging. SUMMARY OF BACKGROUND DATA: The sagittal malalignment of the cervical spine from degeneration in the subaxial cervical spine reflects a disruption in the kinematic properties of the cervical spine and affects the motion of adjacent segments...
January 8, 2018: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29290534/selection-of-distal-fusion-level-in-terms-of-distal-junctional-kyphosis-in-scheuermann-kyphosis-a-comparison-of-3-methods
#4
Fatih Dikici, Turgut Akgul, Kerim Sariyilmaz, Murat Korkmaz, Okan Ozkunt, Cuneyt Sar, Unsal Domanic
OBJECTIVE: The aim of this study was to investigate the effect of distal fusion level selection on the distal junctional kyphosis (DJK) in Scheuermann kyphosis (SK) patients who underwent posterior fusion. METHODS: Thirty-nine SK patients who underwent posterior fusion with a minimum follow-up of 3 years were retrospectively evaluated. According to the distal fusion level, patients were divided into 3 groups. Group S; lowest instrumented vertebra (LIV) was the sagittal stable vertebra (SSV), Group F; LIV was the first lordotic vertebra (FLV) and, Group L; LIV was the lower end vertebra (LEV)...
December 28, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29290133/assessment-of-radiographic-and-clinical-outcomes-of-an-articulating-expandable-interbody-cage-in-minimally-invasive-transforaminal-lumbar-interbody-fusion-for-spondylolisthesis
#5
Lara W Massie, Hesham Mostafa Zakaria, Lonni R Schultz, Azam Basheer, Morenikeji Ayodele Buraimoh, Victor Chang
OBJECTIVE The inability to significantly improve sagittal parameters has been a limitation of minimally invasive surgery for transforaminal lumbar interbody fusion (MIS TLIF). Traditional cages have a limited capacity to restore lordosis. This study evaluates the use of a crescent-shaped articulating expandable cage (Altera) for MIS TLIF. METHODS This is a retrospective review of 1- and 2-level MIS TLIF. Radiographic outcomes included differences in segmental and lumbar lordosis, disc height, evidence of fusion, and any endplate violations...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29245239/predictors-of-ultimate-postoperative-cervical-sagittal-alignment-in-main-thoracic-adolescent-idiopathic-scoliosis-a-long-term-follow-up-study
#6
Zhen Zhang, Zhen Liu, Zezhang Zhu, Yong Qiu
This is a retrospective study. The aim of this study was to access sagittal compensatory mechanism of the cervical spine in thoracic adolescent idiopathic scoliosis (T-AIS) before and after posterior spinal fusion and to identify preoperative or immediate postoperative radiographic parameters that can predict the ultimate cervical sagittal alignment (CSA) after long-term follow-up.A retrospective study was performed on 44 T-AIS patients treated with posterior spinal fusion and with at least 5 years of follow-up...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29243973/cervical-sagittal-alignment-in-patients-with-adolescent-idiopathic-scoliosis-is-it-corrected-by-surgery
#7
Jae Hwan Cho, Chang Ju Hwang, Young Hyun Choi, Dong-Ho Lee, Choon Sung Lee
OBJECTIVE Cervical sagittal alignment (CSA) is related to function and quality of life, but it has not been frequently studied in patients with adolescent idiopathic scoliosis. This study aimed to reveal the change in CSA following corrective surgery, compare the cervical sagittal parameters according to curve types, and assess related factors for postoperative aggravation of CSA. METHODS The authors studied 318 consecutive patients with adolescent idiopathic scoliosis who underwent corrective surgery at a single center...
December 15, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29200481/cervical-laminectomy-with-lateral-mass-screw-fixation-in-cervical-spondylotic-myelopathy-neurological-and-sagittal-alignment-outcome-do-we-need-lateral-mass-screws-at-each-segment
#8
Manoj Dayalal Singrakhia, Nikhil Ramdas Malewar, Sonal Manoj Singrakhia, Shivaji Subhash Deshmukh
Background: Anterior cervical decompression and fusion is the standard procedure used for treating patients with cervical myelopathy. However, these procedures are associated with complications such as pseudarthrosis, construct failure, and neurological complications. Posterior cervical laminectomy and instrumentation is an alternative procedure to treat multilevel cervical myelopathy. In this study, we raised questions whether instrumentation is required at all levels and whether stabilizing the spine in neutral or lordotic contour with indirect decompression leads to neurological improvement with radiological evidence of anterior decompression...
November 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29173440/laminectomy-with-or-without-fusion-to-manage-degenerative-cervical-myelopathy
#9
REVIEW
Fahad H Abduljabbar, Alisson R Teles, Rakan Bokhari, Michael Weber, Carlo Santaguida
Stand-alone cervical laminectomy for degenerative cervical myelopathy (DCM) has become increasingly rare due to risk of postlaminectomy kyphosis. This article discusses the biomechanics of cervical degeneration and how laminectomy effects spine stability, and summarizes relevant clinical studies to help guide surgical decision-making for the posterior treatment of DCM. Laminectomy and fusion remains a safe and efficacious treatment. Stand-alone laminectomy should only be used for a highly selected patient population with relative stiff lordotic cervical spines, using care to not disrupt facets and C2 and C7 muscle attachments...
January 2018: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/29156321/postural-changes-in-orthodontic-patients-treated-with-clear-aligners-a-rasterstereographic-study
#10
Simone Parrini, Benedetta Comba, Gabriele Rossini, Serena Ravera, Giovanni Cugliari, Ilaria De Giorgi, Andrea Deregibus, Tommaso Castroflorio
BACKGROUND: Correlation between malocclusions and body posture has been discussed in the last decades, but there is still a lack of consensus in existing literature. Rasterstereography allows tridimensional reconstruction of the spine, starting from the back surface analysis. So far studies which tested modifications of rasterstereographic parameters during orthodontic treatment, comparing with those obtained from untreated control group, are not available. Clear aligner treatment produces alteration of vertical height due to the occlusal coverage and, subsequently, a stimulation of periodontal receptors which causes an inhibition of the jaw closing muscles and, hypothetically, changes in mandibular posture...
November 14, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29145042/relationship-of-t1-slope-with-loss-of-lordosis-and-surgical-outcomes-after-laminoplasty-for-cervical-ossification-of-the-posterior-longitudinal-ligament
#11
Masashi Miyazaki, Toshinobu Ishihara, Naoki Notani, Shozo Kanezaki, Hiroshi Tsumura
OBJECTIVE: T1 slope (T1S) has emerged as a predictor of kyphotic alignment change after laminoplasty. Although it was reported that patients with cervical ossification of the posterior longitudinal ligament (OPLL) and higher T1S had more pronounced lordotic curvature before surgery and higher loss of cervical lordosis after surgery, few studies have attempted to correlate these findings with clinical outcomes. We aimed to investigate the relationship of T1S with loss of cervical lordosis and surgical outcomes after laminoplasty for cervical OPLL...
November 13, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29137014/radiological-manifestations-and-surgical-outcome-of-combined-upper-cervical-cord-compression-and-cervical-ossification-of-the-posterior-longitudinal-ligament-with-a-minimum-2-year-follow-up
#12
Hao Li, Xiaopeng Zhou, Gang Chen, Fangcai Li, Junfeng Zhu, Qixin Chen
Combined upper cervical cord compression associated with cervical ossification of the posterior longitudinal ligament (OPLL) is a rare and under-recognized disorder. The aim of this study was to investigate the radiological manifestations and surgical outcome of this combined disease.Between May 2011 and July 2015, patients who underwent surgery for combined upper cervical cord compression and cervical OPLL in our institution were included in this study. After a minimum 2-year follow-up, radiological and clinical data were collected...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29112006/modified-lumbosacral-angle-and-modified-pelvic-incidence-as-new-parameters-for-management-of-pediatric-high-grade-spondylolisthesis
#13
Zhenjiang Ma, Changqing Zhao, Kai Zhang, Lin Du, Jianping Tian, Xiaojiang Sun, Jie Zhao
STUDY DESIGN: Retrospective clinical study. OBJECTIVE: We aimed to introduce new parameters that can better describe the pelvic morphology and lumbosacral segmental deformity in children with high-grade spondylolisthesis of the L5 vertebra: modified pelvic incidence (mPI) and modified lumbosacral angle (mLSA). Also, we aimed to establish the mLSA as a convenient, reliable measurement method and criteria to evaluate the reduction of L5 vertebral slippage. SUMMARY OF BACKGROUND DATA: Numerous parameters and methods exist to evaluate segmental deformity and reduction of L5 vertebral slippage, but no definitive standard for accurately and conveniently describing lumbosacral kyphosis and degree of reduction exists...
November 3, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29095412/cervical-sagittal-range-of-motion-as-a-predictor-of-symptom-severity-in-cervical-spondylotic-myelopathy
#14
Kristen J Nicholson, Paul W Millhouse, Emily Pflug, Barrett Woods, Gregory D Schroeder, D Greg Anderson, Alan S Hilibrand, Christopher K Kepler, Mark F Kurd, Jeffrey A Rihn, Alexander Vaccaro, Kris E Radcliff
STUDY DESIGN: Retrospective review of radiographic data and functional outcomes. OBJECTIVE: Evaluate whether myelopathy symptom severity upon presentation corresponds to sagittal plane alignment or non-myelopathy symptoms, such as pain, in patients with cervical spondylotic myelopathy (CSM). SUMMARY OF BACKGROUND DATA: Cervical sagittal balance is an important parameter in the outcome of surgical reconstruction. However, the effect of sagittal alignment on symptom severity in patients who have not undergone spine surgery is not well defined...
October 31, 2017: Spine
https://www.readbyqxmd.com/read/29089564/prognostic-value-of-lordosis-decrease-in-radiographic-adjacent-segment-pathology-after-anterior-cervical-corpectomy-and-fusion
#15
Yin Liu, Na Li, Wei Wei, Jing Deng, Yuequn Hu, Bin Ye, Wei Wang
While cervical lordosis alteration is not uncommon after anterior cervical arthrodesis, its influence on radiological adjacent segment pathology (RASP) is still unclear. Biomechanical changes induced by arthrodesis may contribute to ASP onset. To investigate the correlation between cervical lordosis decrease and RASP onset after anterior cervical corpectomy and fusion (ACCF) and to determine its biomechanical effect on adjacent segments after surgery, 80 CSM patients treated with ACCF were retrospectively studied, and a baseline finite element model of the cervical spine as well as post-operation models with normal and decreased lordosis were established and validated...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29055221/cage-with-anterior-plating-is-advantageous-over-the-stand-alone-cage-for-segmental-lordosis-in-the-treatment-of-two-level-cervical-degenerative-spondylopathy-a-retrospective-study
#16
Paolo Perrini, Federico Cagnazzo, Nicola Benedetto, Riccardo Morganti, Carlo Gambacciani
OBJECTIVES: To compare retrospectively the clinical and radiological outcomes in cervical spinal alignment after two consecutive levels PEEK cage-assisted ACDF when performed with or without plate fixation PATIENTS AND METHODS: Seventy-eight patients underwent two consecutive levels PEEK cage-assisted ACDF without plating (56 patients) or supplemented with plating (22 patients). The average clinical follow-up was 31.40±12.98months. The authors compared clinical parameters (Neck disability index and Robinson criteria), perioperative parameters (hospital stays, complications), and radiological parameters (global lordotic curvature, segmental lordosis, segmental height)...
December 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29054553/long-term-results-of-a-prospective-study-of-anterior-decompression-with-fusion-and-posterior-decompression-with-laminoplasty-for-treatment-of-cervical-spondylotic-myelopathy
#17
Takashi Hirai, Toshitaka Yoshii, Kenichiro Sakai, Hiroyuki Inose, Tsuyoshi Yamada, Tsuyoshi Kato, Shigenori Kawabata, Yoshiyasu Arai, Kenichi Shinomiya, Atsushi Okawa
BACKGROUND: There have been no prospective studies comparing anterior surgery and posterior method in terms of long-term outcomes. The purposes of this study is to clarify whether there is any difference in long-term clinical and radiologic outcomes of anterior decompression with fusion (ADF) and laminoplasty (LAMP) for the treatment of cervical spondylotic myelopathy (CSM). METHODS: Ninety-five patients were prospectively treated with ADF or LAMP for CSM in our hospital from 1996 through 2003...
October 17, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29021674/the-efficacy-of-sagittal-cervical-spine-subtyping-investigating-radiological-classification-methods-within-150-asymptomatic-participants
#18
Lee Daffin, Max C Stuelcken, Mark G L Sayers
AIMS: The aim of this study is to (1) compare and contrast cervical subtype classification methods within an asymptomatic population, and (2) identify inter-methodological consistencies and describe examples of inconsistencies that have the potential to affect subtype classification and clinical decision-making. METHODS: A total of 150 asymptomatic 18-30-year-old participants met the strict inclusion criteria. An erect neutral lateral radiograph was obtained using standard procedures...
July 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/29017106/surgical-outcomes-after-laminoplasty-for-cervical-spondylotic-myelopathy-a-focus-on-the-dynamic-factors-and-signal-intensity-changes-in-the-intramedullary-spinal-cord-on-mri
#19
Masashi Miyazaki, Naoki Notani, Toshinobu Ishihara, Shozo Kanezaki, Hiroshi Tsumura
OBJECTIVE: We aimed to analyze the relationship between the dynamic factors and signal intensity changes in the intramedullary spinal cord on MRI, and surgical outcomes, following double-door laminoplasty for cervical spondylotic myelopathy (CSM). PATIENTS AND METHODS: This retrospective study included 100 consecutive patients who underwent double-door laminoplasty for CSM. The following factors were analyzed: JOA score recovery rate, age, duration from onset to surgery, intraoperative bleeding, signal intensity changes in the intramedullary spinal cord on MRI, pre and postoperative C2-7 lordotic angle (LA), changes in C2-7 LA, pre and postoperative C2-7 range of motion (ROM), and pre and postoperative segmental ROM...
November 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28960160/overpowering-posterior-lumbar-instrumentation-and-fusion-with-hyperlordotic-anterior-lumbar-interbody-cages-followed-by-posterior-revision-a-preliminary-feasibility-study
#20
Abhijeet Kadam, Nathan Wigner, Philip Saville, Vincent Arlet
OBJECTIVE The authors' aim in this study was to evaluate whether sagittal plane correction can be obtained from the front by overpowering previous posterior instrumentation and/or fusion with hyperlordotic anterior lumbar interbody fusion (ALIF) cages in patients undergoing revision surgery for degenerative spinal conditions and/or spinal deformities. METHODS The authors report their experience with the application of hyperlordotic cages at 36 lumbar levels for ALIFs in a series of 20 patients who underwent revision spinal surgery at a single institution...
September 29, 2017: Journal of Neurosurgery. Spine
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