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Sagittal balance

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https://www.readbyqxmd.com/read/27909653/magnetic-resonance-imaging-of-the-cervical-spine-under-represents-sagittal-plane-deformity-in-degenerative-myelopathy-patients
#1
Douglas S Weinberg, Arunit J Chugh, Jeremy J Gebhart, Jason D Eubanks
BACKGROUND: In treating patients with cervical myelopathy, surgical approach may be dictated by sagittal balance, highlighting the need for accurate pre-operative assessment. Magnetic Resonance Imaging (MRI) is widely-recognized for its utility in the diagnosis and surgical planning of cervical myelopathy. Plain radiographs (X-rays) are a reliable tool to assess bony alignment. However, they may not always be included in standard pre-operative evaluation, especially in an era of restricted payer-environments...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27879576/analysis-of-sagittal-parameters-in-patients-undergoing-one-or-two-level-closing-wedge-osteotomy-for-correcting-thoracolumbar-kyphosis-secondary-to-ankylosing-spondylitis
#2
Wen-Bin Hua, Yu-Kun Zhang, Yong Gao, Xian-Zhe Liu, Shu-Hua Yang, Xing-Huo Wu, Jing Wang, Cao Yang
STUDY DESIGN: Retrospective analysis of clinical records. OBJECTIVE: To assess and compare the improvement in sagittal balance after one- or two-level closing wedge osteotomy for correcting thoracolumbar kyphosis secondary to ankylosing spondylitis (AS). SUMMARY OF BACKGROUND DATA: Closing wedge osteotomy represents a common approach to correct kyphosis in AS. While several reports have described the outcomes of one- or two-level closing wedge osteotomy in terms of sagittal parameters, data comparing the outcomes of these procedures are scarce...
November 22, 2016: Spine
https://www.readbyqxmd.com/read/27875411/comparing-the-effectiveness-of-sagittal-balance-foraminal-stenosis-and-preoperative-cord-rotation-in-predicting-postoperative-c5-palsy
#3
Arunit J S Chugh, Douglas S Weinberg, Fernando Alonso, Jason D Eubanks
STUDY DESIGN: Retrospective cohort review. OBJECTIVE: To determine whether preoperative cord rotation is independently correlated with C5 palsy when analyzed alongside measures of sagittal balance and foraminal stenosis. SUMMARY OF BACKGROUND DATA: Postoperative C5 palsy is a well-documented complication of cervical procedures with a prevalence of 4%-8%. Recent studies have shown a correlation with preoperative spinal cord rotation. There have been few studies, however, that have examined the role of sagittal balance and foraminal stenosis in the development of C5 palsy...
November 21, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27864681/are-sagittal-spinopelvic-radiographic-parameters-significantly-associated-with-quality-of-life-of-adult-spinal-deformity-patients-multivariate-linear-regression-analyses-for-pre-operative-and-short-term-post-operative-health-related-quality-of-life
#4
Mitsuru Takemoto, Louis Boissière, Jean-Marc Vital, Ferran Pellisé, Francisco Javier Sanchez Perez-Grueso, Frank Kleinstück, Emre R Acaroglu, Ahmet Alanay, Ibrahim Obeid
PURPOSE: To evaluate the association in ASD patients between spinopelvic sagittal parameters and health-related quality of life (HRQL), adjusted for demographic and surgical variables. METHODS: We constructed multiple linear regression models to investigate pre-operative (PreOp) and 6-month post-operative (PostOp) HRQL as assessed by the Oswestry Disability Index (ODI), with sagittal parameters as independent variables adjusted for potential confounders, such as age, sex, body mass index, past spine surgery, types of surgical treatment, and complications...
November 18, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27861359/characterization-of-radiographic-features-of-consecutive-lumbar-spondylolisthesis
#5
Yapeng Sun, Hui Wang, Dalong Yang, Nan Zhang, Sidong Yang, Wei Zhang, Wenyuan Ding
Radiographic features of consecutive lumbar spondylolisthesis were retrospectively analyzed in a total of 17 patients treated for this condition at the Third Hospital of Hebei Medical University from June 2005 to March 2012.To investigate the radiographic features, pelvic compensatory mechanisms, and possible underlying etiologies of consecutive lumbar spondylolisthesis.To the best of our knowledge, there is no previous report concerning the characteristics of consecutive lumbar spondylolisthesis.The Taillard index and the lumbar lordosis (LL), pelvic incidence (PI), sacrum slope (SS), and pelvic tilt (PT) were determined on lateral X-ray images, and the angular displacement was analyzed on flexion-extension X-ray images...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27854109/effect-of-mono-or-bisegmental-lordosizing-fusion-on-short-term-global-and-index-sagittal-balance-a-radiographic-study
#6
Enrico Tessitore, Ilaria Melloni, Oliver P Gautschi, Gianluigi Zona, Karl Schaller, Pedro Berjano
BACKGROUND: Sagittal balance is widely recognized as an important outcome factor in reconstructive spinal surgery for lumbar degenerative conditions. However, its role in short segmental fixation is unknown. The aim of this study is to evaluate the preoperative and short-term postoperative spino-pelvic balance after short (1 or 2 levels) lordosizing lumbar fusion for degenerative disc disease (DDD). MATERIALS AND METHODS: Twenty-six consecutive patients (13 males and 13 females) undergoing mono- or bisegmental lordosizing lumbar fusion (XLIF/TLIF) for lumbar DDD were included in the study...
November 17, 2016: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/27852498/evaluation-of-limited-screw-density-pedicle-screw-constructs-in%C3%A2-posterior-fusions-for-adolescent-idiopathic-scoliosis
#7
John W Kemppainen, Melanie A Morscher, M David Gothard, Mark J Adamczyk, Todd F Ritzman
STUDY DESIGN: Retrospective case series. OBJECTIVES: To compare radiographic and clinical outcomes in posterior spine fusions with pedicle screw instrumentation of varying screw densities in the treatment of adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA: Posterior spinal fusion with pedicle screw instrumentation is the mainstay of surgical treatment for AIS. The most commonly used construct consists of screws placed at every level on the concave side of the deformity and nearly every level on the convex side...
January 2016: Spine Deformity
https://www.readbyqxmd.com/read/27847853/assessment-of-coronal-radiographic-parameters-of-the-spine-in-the-treatment-of-adolescent-idiopathic-scoliosis
#8
Mohsen Karami, Arash Maleki, Keyvan Mazda
BACKGROUND: To determine the most important preoperative factors that affect postoperative coronal parameters of scoliotic curves. METHODS: All Adolescent Idiopathic Scoliosis (AIS) patients included in the study were classified according to Lenke and King Classification. The fusion levels were selected according to the rigidity of the existing curves (correction less than 50%), tilt of T1 and shoulders, sagittal angle of the curves and with considering stable and neutral end vertebra...
October 2016: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/27847576/surgical-outcomes-of-post-fusion-lumbar-flatback-deformity-with-sagittal-imbalance
#9
Jin Seong Kim, Sung Min Kim
OBJECTIVES: To review surgical results of post-fusion lumbar flatback treated with pedicle subtraction osteotomy (PSO) or Smith-Petersen osteotomies (SPOs). METHODS: Twenty-eight patients underwent osteotomies. Radiological outcomes by sagittal vertical axis (SVA), and pelvic tilt (PT), T1 pelvic angle (T1PA), and pelvic incidence (PI)-lumbar lordosis (LL) at preoperative, postoperative 1 month, and final were evaluated. Oswestry Disability Index (ODI), visual analog scale (VAS) score of back pain/leg pain, and Scoliosis Research Society-22 score (SRS-22r) were analyzed and compared...
November 2016: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/27833745/advances-in-real-time-magnetic-resonance-imaging-of-the-vocal-tract-for-speech-science-and-technology-research
#10
Asterios Toutios, Shrikanth S Narayanan
Real-time magnetic resonance imaging (rtMRI) of the moving vocal tract during running speech production is an important emerging tool for speech production research providing dynamic information of a speaker's upper airway from the entire mid-sagittal plane or any other scan plane of interest. There have been several advances in the development of speech rtMRI and corresponding analysis tools, and their application to domains such as phonetics and phonological theory, articulatory modeling, and speaker characterization...
2016: APSIPA Transactions on Signal and Information Processing
https://www.readbyqxmd.com/read/27833342/hard-and-soft-tissue-changes-following-maxillary-distraction-osteogenesis-and-mandibular-setback-with-bilateral-sagittal-split-osteotomy
#11
Shilpa S Bawane, Neelam N Andrade
AIMS OF THIS STUDY: (1) To highlight the role of intraoral submerged device in distraction osteogenesis (DO) of patients requiring two jaw surgeries for the correction of severe developmental maxillary hypoplasia (MH) and mandibular prognathism (MP) (2) To analyse the hard and soft tissue changes following maxillary DO and mandibular setback with bilateral sagittal split osteotomy (BSSO) in patients with severe MH and MP requiring two jaw surgeries. MATERIALS AND METHODS: During the period Jan 2004 to Dec 2006, five patients with severe developmental MH along with MP were treated...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27831964/selective-anterior-thoracolumbar-fusion-in-adolescent-idiopathic-scoliosis-long-term-results-after-17-year-follow-up
#12
Renato Delfino, Javier Pizones, Cristina Ruiz, Felisa Sánchez-Mariscal, Lorenzo Zúñiga, Enrique Izquierdo
STUDY DESIGN: Prospectively-updated long-term data and retrospective case series analysis. OBJECTIVE: To report the long-term results of selective anterior instrumented thoracolumbar (ThL) fusion in adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA: The results of anterior selective fusion in AIS have been reported up to 2 and 5 years follow-up. However, there is a lack of evidence of long-term results of this surgical approach...
November 9, 2016: Spine
https://www.readbyqxmd.com/read/27825594/location-of-the-natural-knee-axis-for-internal-external-tibial-rotation
#13
Daniel V Boguszewski, Nirav B Joshi, Paul R Yang, Keith L Markolf, Frank A Petrigliano, David R McAllister
BACKGROUND: Rotating hinge and mobile bearing tray knee replacement designs utilize a single fixed axis for tibial rotation, yet there is little published information regarding the natural internal-external axis (IEA) for tibial rotation. Identifying the IEA should provide an opportunity for reproducing normal knee kinematics and maintaining the balance of forces in the soft tissues that help control rotation of the tibia. METHODS: The location and orientation of the IEA relative to the tibial plateau were calculated in 46 fresh frozen human cadaveric specimens using an instant center of rotation analysis at fixed knee flexion angles ranging from five degrees to 105°...
November 4, 2016: Knee
https://www.readbyqxmd.com/read/27825352/treatment-of-kyphosis-in-ankylosing-spondylitis-by-osteotomy-through-the-gap-of-a-pathological-fracture-a-retrospective-study
#14
Hongqi Zhang, Zhenhai Zhou, Chaofeng Guo, Yuxiang Wang, Honggui Yu, Longjie Wang
BACKGROUND: Surgical interventions are commonly advocated for correcting kyphotic deformities and relieving severe back pain in ankylosing spondylitis (AS) patients. The aim of this study was to evaluate the clinical outcome of osteotomy performed through the gap of a pathological fracture for the treatment of kyphosis in ankylosing spondylitis and to introduce the key points of this novel surgical approach. METHODS: From January 1, 2010, to December 31, 2014, 13 consecutive AS patients who were treated with osteotomy through the fracture gap were retrospectively reviewed...
November 8, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27821673/effect-of-core-stability-training-on-trunk-function-standing-balance-and-mobility-in-stroke-patients-a-randomized-controlled-trial
#15
Koshiro Haruyama, Michiyuki Kawakami, Tomoyoshi Otsuka
Background Trunk function is important for standing balance, mobility, and functional outcome after stroke, but few studies have evaluated the effects of exercises aimed at improving core stability in stroke patients. Objective To investigate the effectiveness of core stability training on trunk function, standing balance, and mobility in stroke patients. Methods An assessor-blinded, randomized controlled trial was undertaken in a stroke rehabilitation ward, with 32 participants randomly assigned to an experimental group or a control group (n = 16 each)...
November 7, 2016: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/27801408/-the-regulation-of-balance-in-the-children-presenting-with-severe-cerebral-palsy-following-the-treatment-with-the-use-of-the-locomotor-training-in-combination-with-the-electrical-stimulation-of-leg-muscles-and-spinal-cord
#16
I E Nikityuk, T R Moshonkina, Yu P Gerasimenko, S V Vissarionov, A G Baindurashvili
: One of the cerebral palsy (CP) symptoms is the impairment of the ability to maintain upright standing. The objective of the present study was to investigate the effect of the locomotor training combined with electrical transcutaneous spinal cord stimulation (TSCS) and functional electrical stimulation (FES) of the muscles to facilitate the restoration of the vertical posture function in the children presenting with cerebral palsy. PATIENTS AND METHODS: This article is designed to present the results of the study that included 19 patients at the age from 6 to 12 years...
2016: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/27792409/stand-alone-anterior-lumbar-interbody-fusion-indications-techniques-surgical-outcomes-and-complications
#17
Mena Kerolus, Mazda K Turel, Lee Tan, Harel Deutsch
Anterior lumbar interbody fusion (ALIF) is a well-established technique to achieve lumbar spine fusion with various indications including degenerative disk disease, spondylolisthesis, recurrent disk herniation, adjacent level disease, pseudoarthrosis, as well as being used as part of the overall strategy to restore sagittal balance. ALIF can be an extremely useful tool in any spine surgeon's armamentarium. However, like any surgical procedure, proper patient selection is key to success. A solid understanding of the biomechanics, careful surgical planning, along with clear knowledge of the advantages and disadvantages of stand-alone ALIF will ensure optimal clinical outcome...
November 11, 2016: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/27789098/analysis-of-the-pelvic-functional-orientation-in-the-sagittal-plane-a-radiographic-study-with-eos-2d-3d-technology
#18
Mattia Loppini, Umile Giuseppe Longo, Pasquala Ragucci, Nicoletta Trenti, Luca Balzarini, Guido Grappiolo
BACKGROUND: We investigated the relationship between pelvic incidence (PI) with anterior pelvic plane angle (APPA), pelvic tilt (PT) angle, and sacral slope (SS) in standing and sitting positions to identify the best parameter expressing the pelvic functional orientation in the sagittal plane. METHODS: We enrolled 109 consecutive patients (M:F = 43:66) eligible for a primary total hip arthroplasty (THA) with an average age of 63.4 years (15-85). EOS 2D/3D radiography was performed in standing and sitting positions before THA to evaluate the functional pelvic orientation...
September 28, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27785473/the-three-dimensional-analysis-of-the-sforzesco-brace-correction
#19
Sabrina Donzelli, Fabio Zaina, Monia Lusini, Salvatore Minnella, Stefano Respizzi, Luca Balzarini, Salvatore Poma, Stefano Negrini
BACKGROUND: Scoliosis is a three dimensional deformity, and brace correction should be 3D too. There is a lack of knowledge of the effect of braces, particularly in the sagittal and transverse plane. The aim of this study is to analyse the Sforzesco Brace correction, through all the parameters provided by Eos 3D imaging system. METHOD: Design: This is a cross sectional study from a prospective database started in March 2003. Participants: 16 AIS girls (mean age 14...
2016: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/27765562/extreme-lateral-interbody-fusion-xlif-a-single-center-clinical-and-radiological-follow-up-study-of-20-patients
#20
Enrico Tessitore, Granit Molliqaj, Karl Schaller, Oliver Pascal Gautschi
Extreme lateral interbody fusion (XLIF) is an alternative to standard posterior approaches for achieving fusion in the lumbar spine. It allows exposure of the lateral aspect of the lumbar disc through a lateral approach with the possibility to insert a wide footprint interbody cage as a stand-alone procedure or associated with a uni- or bilateral percutaneous fixation. This is a retrospective series of 20 consecutive patients operated with a XLIF procedure from 2014 to 2015. N=10 women and N=10 men with a mean age of 67...
October 17, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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