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https://www.readbyqxmd.com/read/28673830/motion-preservation-following-total-lumbar-disc-replacement-at-the-lumbosacral-junction-a-prospective-long-term-clinical-and-radiographic-investigation
#1
Christoph Wuertinger, Raphael Dàgostino Annes, Wolfgang Hitzl, Christoph J Siepe
BACKGROUND CONTEXT: Total lumbar disc replacement (TDR) intends to avoid fusion related negative side effects by means of motion preservation. Despite of their widespread use, the adequate quality and quantity of motion as well as the correlation between radiographic data with the patient's clinical symptomatology remains to be established. Long-term data are lacking in particular. PURPOSE: To perform a clinical and radiographic long-term investigation following TDR with special emphasis on motion preservation assessment and to establish any potential correlation with patient reported outcome parameters...
June 30, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28660108/distal-fusion-level-selection-in-scheuermann-s-kyphosis-a-comparison-of-lordotic-disc-segment-versus-the-sagittal-stable-vertebrae
#2
Han Jo Kim, Venu Nemani, Oheneba Boachie-Adjei, Matthew E Cunningham, Justin A Iorio, Kevin O'Neill, Brian J Neuman, Lawrence G Lenke
STUDY DESIGN: Retrospective study. OBJECTIVE: To compare 2 methods of selecting the lowest instrumented vertebra (LIV) on the rates of revision surgery for distal junctional kyphosis (DJK) following treatment for Scheuermann's kyphosis (SK). METHODS: A retrospective review of patients who have undergone surgical treatment for SK was performed. Forty-four patients were divided into 2 groups based on intervention: Group 1 (n = 26) included patients who had an LIV distal to or at the sagittal stable vertebrae (SSV), and Group 2 (n = 18) included patients who had an LIV proximal to the SSV...
May 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28658033/laminoplasty-does-not-lead-to-worsening-axial-neck-pain-in-the-properly-selected-patient-with-cervical-myelopathy-a-comparison-with-laminectomy-and-fusion
#3
Byron F Stephens, John M Rhee, Thomas Neustein, Rafael Arceo
STUDY DESIGN: Retrospective cohort study of prospectively collected data. OBJECTIVE: To determine if laminoplasty (LP) is associated with worsening axial neck pain in patients with multilevel cervical myelopathy, and to compare neck pain, clinical outcomes, and radiographic measures in a group undergoing laminectomy and fusion (LF). SUMMARY OF BACKGROUND DATA: Postoperative new or worsening axial neck pain is commonly cited as a major disadvantage of laminoplasty...
June 27, 2017: Spine
https://www.readbyqxmd.com/read/28641325/superior-canal-dehiscence-syndrome-associated-with-scuba-diving
#4
Naoharu Kitajima, Akemi Sugita-Kitajima, Seiji Kitajima
A 28-year-old female diver presented with dizziness and difficulty clearing her left ear whilst scuba diving. Her pure-tone audiometry and tympanometry were normal. Testing of Eustachian tube function revealed tubal stenosis. Video-oculography revealed a predominantly torsional nystagmus while the patient was in the lordotic position. Fistula signs were positive. High-resolution computed tomography (HRCT) of the temporal bone revealed a diagnosis of bilateral superior semicircular canal dehiscence (SCDS). Cervical vestibular-evoked myogenic potential (cVEMP) testing showed that the amplitude of the cVEMP measured from her left ear was larger than that from the right...
June 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28624723/repeated-end-range-spinal-movement-while-seated-abolishes-the-proprioceptive-deficit-induced-by-prolonged-flexed-sitting-posture-a-study-assessing-the-statistical-and-clinical-significance-of-spinal-position-sense
#5
Vasileios Korakakis, Giannis Giakas, Vasilis Sideris, Rodney Whiteley
BACKGROUND: Sustained spinal flexion has been proposed to affect the properties of spinal tissues, increase postural muscle's activation latency and act detrimentally on proprioception. OBJECTIVES: This study evaluated the effect of flexed posture (FP) on spinal proprioception and assessed the immediate effect of spinal movement on the presumable flexion-induced proprioceptive deficit. DESIGN: Clinical measurement study. METHODS: Marker-based kinematic analyses of the head, spine, and pelvis were conducted on 50 individuals...
June 10, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28620787/do-position-and-size-matter-an-analysis-of-cage-and-placement-variables-for-optimum-lordosis-in-plif-reconstruction
#6
Priyan R Landham, Angus S Don, Peter A Robertson
PURPOSE: To examine monosegmental lordosis after posterior lumbar interbody fusion (PLIF) surgery and relate lordosis to cage size, shape, and placement. METHODS: Eighty-three consecutive patients underwent single-level PLIF with paired identical lordotic cages involving a wide decompression and bilateral facetectomies. Cage parameters relating to size (height, lordosis, and length) and placement (expressed as a ratio relative to the length of the inferior vertebral endplate) were recorded...
June 15, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28585675/a-modified-jaslow-transforaminal-lumbar-interbody-fusion-for-the-treatment-of-isthmic-spondylolisthesis
#7
ChaoJiang Yu, Xiao Gao, Kai Huang, BuQing Chang, Hu Feng, Jie Zhao
AIM: To describe a modified Jaslow-transforaminal lumbar interbody fusion (TLIF) technique for the treatment of single-level, isthmic spondylolisthesis (IS). MATERIAL AND METHODS: Between April 2011 and September 2012, 32 patients with IS undergoing a modified Jaslow-TLIF, were retrospectively reviewed. The intervertebral space height (IH), vertebral slippage ratio, lordotic angles of the treated segments (SA) and lumbar lordotic angles (LA) were measured and the scores by Visual Analogue Scale (VAS), Oswestry Disability Index (ODI) and Japanese Orthopaedic Association (JOA) were recorded...
April 30, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28561274/statistical-shape-modelling-of-hip-and-lumbar-spine-morphology-and-their-relationship-in-the-mrc-national-survey-of-health-and-development
#8
Anastasia V Pavlova, Fiona R Saunders, Stella G Muthuri, Jennifer S Gregory, Rebecca J Barr, Kathryn R Martin, Rebecca J Hardy, Rachel Cooper, Judith E Adams, Diana Kuh, Richard M Aspden
The anatomical shape of bones and joints is important for their proper function but quantifying this, and detecting pathological variations, is difficult to do. Numerical descriptions would also enable correlations between joint shapes to be explored. Statistical shape modelling (SSM) is a method of image analysis employing pattern recognition statistics to describe and quantify such shapes from images; it uses principal components analysis to generate modes of variation describing each image in terms of a set of numerical scores after removing global size variation...
May 31, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28552696/a-novel-tool-for-deformity-surgery-planning-determining-the-magnitude-of-lordotic-correction-required-to-achieve-a-desired-sagittal-vertical-axis
#9
Ezequiel Goldschmidt, Federico Angriman, Nitin Agarwal, James Zhou, Katherine Chen, Zachary J Tempel, Peter C Gerszten, Adam S Kanter, David O Okonkwo, Peter Passias, Justin Scheer, Themistocles Protopsaltis, Virginie Lafage, Renaud Lafage, Frank Schwab, Shay Bess, Christopher Ames, Justin S Smith, Christopher I Shaffrey, Emily Miller, Amit Jain, Brian Neuman, Daniel M Sciubba, Douglas Burton, D Kojo Hamilton
OBJECTIVE: We sought to create a model capable of predicting the magnitude of pelvic incidence-lumbar lordosis (PI-LL) correction necessary to achieve a desired change in sagittal vertical axis (SVA). METHODS: A retrospective review was conducted of a prospectively maintained multicenter adult spinal deformity database collected by the International Spine Study Group between 2009 and 2014. The independent variable of interest was the degree of correction achieved in the PI-LL mismatch 6 weeks after surgery...
August 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28525492/degenerative-cervical-disc-disease-long-term-changes-in-sagittal-alignment-and-their-clinical-implications-after-cervical-interbody-fusion-cage-subsidence-a-prospective-study-with-standalone-lordotic-tantalum-cages
#10
Félix Tomé-Bermejo, Julián A Morales-Valencia, Javier Moreno-Pérez, Juan Marfil-Pérez, Elena Díaz-Dominguez, Angel R Piñera, Luis Alvarez
STUDY DESIGN: A retrospective, observational study of prospectively collected outcomes. OBJECTIVE: To investigate the long-term clinical course of anterior cervical discectomy and fusion with interbody fusion cages (ACDF-IFC) with lordotic tantalum implants and to correlate the radiologic findings with the clinical outcomes, with special emphasis on the significance and the influence of implant subsidence. SUMMARY OF BACKGROUND DATA: Cage subsidence is the most frequently reported complication after ACDF-IFC...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28523382/adult-spinal-deformity-effectiveness-of-interbody-lordotic-cages-to-restore-disc-angle-and-spino-pelvic-parameters-through-completely-mini-invasive-trans-psoas-and-hybrid-approach
#11
Giuseppe Barone, Laura Scaramuzzo, Antonino Zagra, Fabrizio Giudici, Andrea Perna, Luca Proietti
PURPOSE: The aim of the study is to assess and quantify the effectiveness of interbody lordotic cages applied by trans-psoas approach to improve radiographic parameters, showing the differences between completely mini-invasive and hybrid approach. METHODS: We collected data of 65 patients affected by degenerative lumbar deformity/diseases and underwent mini-invasive lateral interbody fusion followed by percutaneous (group A, completely mini-invasive) or open (group B, hybrid) posterior instrumentation...
May 18, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28511802/-a-continuous-series-of-27-adult-patients-treated-for-l5-s1-isthmic-spondylolisthesis-by-combined-approach-clinical-and-radiological-outcomes-at-1-year-follow-up
#12
N Koné, E Freitas Olim, P Coloma, A Rusconi, L Chenin, O Sy, I S Souaré, C Barrey
Through this single-center consecutive prospective study, we evaluated the results of a combined approach for L5-S1 isthmic spondylolisthesis, using a polyetheretherketone (PEEK) interbody lordotic cage during anterior approach and pedicle screw-based posterior fixation. Between 2010 and 2014, 27 adult patients were treated for L5-S1 isthmic spondylolisthesis (high and low grades) by a combined approach with a minimum follow-up of one year. Clinical outcome was assessed before surgical treatment and at four months and one year after surgery by: VAS, Oswestry Index (ODI) and Rolland-Morris scores...
May 13, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28501956/an-in-vitro-evaluation-of-sagittal-alignment-in-the-cervical-spine-after-insertion-of-supraphysiologic-lordotic-implants
#13
Donald J Blaskiewicz, Jeffrey E Harris, Patrick P Han, Alexander W Turner, Gregory M Mundis
PURPOSE: Cervical spine malalignment can develop as a consequence of degenerative disc disease or following spinal surgery. When normal sagittal alignment of the spine is disrupted, further degeneration may occur adjacent to the deformity. The purpose of this study was to investigate changes in lordosis and sagittal alignment in the cervical spine after insertion of supraphysiologic lordotic implants. METHODS: Eight cadaveric cervical spines (Occiput-T1) were tested...
May 13, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28499016/minimally-invasive-transforaminal-lumbar-interbody-fusion-using-banana-shaped-and-straight-cages-radiological-and-clinical-results-from-a-prospective-randomized-clinical-trial
#14
Won-Suh Choi, Jin-Sung Kim, Jung-Woo Hur, Ji-Hoon Seong
BACKGROUND: In minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF), cage type and position play important roles in fusion achievement and sagittal alignment correction. However, no prospective randomized comparison of the results using different types of cage has been reported to date. OBJECTIVE: To compare the radiological and clinical outcomes of unilateral MIS-TLIF using 2 types of cage. METHODS: All candidates for single-level MIS-TLIF were randomized into banana-shaped cage and straight-cage groups...
May 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28476690/the-relationships-between-low-back-pain-and-lumbar-lordosis-a-systematic-review-and-meta-analysis
#15
REVIEW
Se-Woong Chun, Chai-Young Lim, Keewon Kim, Jinseub Hwang, Sun G Chung
BACKGROUND CONTEXT: Clinicians regard lumbar lordotic curvature (LLC) with respect to low back pain (LBP) in a contradictory fashion. The time-honored point of view is that LLC itself, or its increment causes LBP. On the other hand, recently, the biomechanical role of LLC has been emphasized and loss of lordosis is considered a possible cause of LBP. The relationship between LLC and LBP has immense clinical significance, since it serves as the basis of therapeutic exercises for treating and preventing LBP...
May 2, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28455623/classification-of-normal-sagittal-spine-alignment-refounding-the-roussouly-classification
#16
Féthi Laouissat, Amer Sebaaly, Martin Gehrchen, Pierre Roussouly
PURPOSE: Although the Roussouly classification of common variants in spinal sagittal alignment is well accepted, no studies have implemented it in an asymptomatic adult population. In addition, no study investigated the radiographic features of asymptomatic patients with an anteverted pelvis. The aim of this prospective radiographic study of 296 asymptomatic adults without spinal pathology was to investigate how the Roussouly classification could include the anteverted pelvis concept...
April 28, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28449961/risk-factors-of-proximal-junctional-kyphosis-in-adolescent-idiopathic-scoliosis-the-pelvis-and-other-considerations
#17
Baron S Lonner, Yuan Ren, Peter O Newton, Suken A Shah, Amer F Samdani, Harry L Shufflebarger, Jahangir Asghar, Paul Sponseller, Randal R Betz, Burt Yaszay
STUDY DESIGN: Prospective multicenter database study. OBJECTIVES: To assess the incidence of proximal junctional kyphosis (PJK) in operative adolescent idiopathic scoliosis (AIS) using contemporary surgical techniques and to identify risk factors for PJK. SUMMARY OF BACKGROUND DATA: The incidence of PJK has been reported as high as 46% in AIS. Factors associated with PJK have been incompletely explored. METHODS: Prospectively enrolled 851 AIS patients (2000-2011, 78...
May 2017: Spine Deformity
https://www.readbyqxmd.com/read/28437335/do-lordotic-cages-provide-better-segmental-lordosis-versus-nonlordotic-cages-in-lateral-lumbar-interbody-fusion-llif
#18
Jonathan N Sembrano, Ryan D Horazdovsky, Amit K Sharma, Sharon C Yson, Edward R G Santos, David W Polly
STUDY DESIGN: A retrospective comparative radiographic review. OBJECTIVE: To evaluate the radiographic changes brought about by lordotic and nonlordotic cages on segmental and regional lumbar sagittal alignment and disk height in lateral lumbar interbody fusion (LLIF). SUMMARY OF BACKGROUND DATA: The effects of cage design on operative level segmental lordosis in posterior interbody fusion procedures have been reported. However, there are no studies comparing the effect of sagittal implant geometry in LLIF...
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
#19
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/28374128/cage-deviation-in-the-subaxial-cervical-spine-in-relation-to-implant-position-in-the-sagittal-plane
#20
Klaus Christian Mende, Sven Oliver Eicker, Friedrich Weber
Subsidence of interbody cages is a frequently observed and relevant complication in anterior cervical discectomy and fusion (ACDF). Only a handful of studies concentrated on the modality of subsidence and its clinical impact. We performed a retrospective analysis of ACDF patients from 2004 to 2010. Numeric analog scale (NAS) score pre-op and post-op, Oswestry Disability Index (ODI) on x-rays, endplate (EP) and cage dimensions, implant position, lordotic/kyphotic subsidence patterns (>5°), and cervical alignment were recorded...
April 4, 2017: Neurosurgical Review
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