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https://www.readbyqxmd.com/read/28204925/circumferential-fusion-for-degenerative-lumbar-spondylolisthesis-complicated-by-distal-junctional-grade-4-spondylolisthesis-in-the-sub-acute-post-operative-setting
#1
Alexander A Theologis, Deeptee Jain, Christopher P Ames, Murat Pekmezci
INTRODUCTION: Surgical management for lumbar stenosis is generally safe and provides significant improvements in pain, disability, and function. Successful lumbar decompression hinges on removing an appropriate amount of lamina and other compressive pathology in the lateral recess. Too little bony decompression can result in persistent pain and disability, while over resection of the pars and/or facets may jeopardize spinal stability. CASE REPORT: In this unique report, we present for the first time an acute iatrogenic grade 4 L5-S1 spondylolisthesis distal to a L3-5 laminectomy and circumferential instrumented fusion due to bilateral iatrogenic L5 pars fractures and its management and clinical outcomes after revision operation...
February 15, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28192267/posterior-only-vertebral-column-resection-for-the-treatment-of-severe-spinal-deformities-in-pediatric-patients-a-retrospective-case-series
#2
Malte Schroeder, Lennart Viezens, Philip Kunkel, Karsten Ridderbusch, Tim Nicolas Hissnauer, Oliver Dirk Jungesblut, Michael Hoffmann, Johannes Maria Rueger, Ralf Stuecker
OBJECTIVE: The treatment of severe spinal deformities in pediatric patients is very challenging. Posterior only vertebral column resection (PVCR) allows for correcting of severe deformities of the vertebral column via a posterior only procedure. We analyzed radiological outcome of PVCR performed on a series of pediatric patients with severe congenital and acquired spinal deformities. METHODS: A case series of eleven pediatric patients with severe spinal deformity who were treated by PVCR between 2009 and 2013 were retrospectively analyzed...
February 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28116458/correlation-analysis-of-osteoporotic-vertebral-compression-fractures-and-spinal-sagittal-imbalance
#3
Yi-Long Zhang, Li-Tao Shi, Pei-Fu Tang, Zhi-Jie Sun, Ya-Hui Wang
PURPOSE: To evaluate the correlation between osteoporotic vertebral compression fractures and spinal sagittal imbalance, in order to provide a reference for clinical treatment. METHODS: From September 2013 to March 2015, 60 elderly patients with old osteoporotic vertebral compression factures (observation group) and 60 healthy elderly people (control group) were studied. Whole-spine anteroposterior and lateral view X‑ray photographs were taken from all participants, the number and location of fractured vertebrae were recorded, and sagittal parameters in both groups were compared...
January 23, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28059683/spinopelvic-sagittal-imbalance-as-a-risk-factor-for-adjacent-segment-disease-after-single-segment-posterior-lumbar-interbody-fusion
#4
Tomiya Matsumoto, Shinya Okuda, Takafumi Maeno, Tomoya Yamashita, Ryoji Yamasaki, Tsuyoshi Sugiura, Motoki Iwasaki
OBJECTIVE The importance of spinopelvic balance and its implications for clinical outcomes after spinal arthrodesis has been reported in recent studies. However, little is known about the relationship between adjacent-segment disease (ASD) after lumbar arthrodesis and spinopelvic alignment. The purpose of this study was to clarify the relationship between spinopelvic radiographic parameters and symptomatic ASD after L4-5 single-level posterior lumbar interbody fusion (PLIF). METHODS This was a retrospective 1:5 matched case-control study...
January 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28042117/spinopelvic-mobility-and-acetabular-component-position-for-total-hip-arthroplasty
#5
M Stefl, W Lundergan, N Heckmann, B McKnight, H Ike, R Murgai, L D Dorr
AIMS: Posterior tilt of the pelvis with sitting provides biological acetabular opening. Our goal was to study the post-operative interaction of skeletal mobility and sagittal acetabular component position. MATERIALS AND METHODS: This was a radiographic study of 160 hips (151 patients) who prospectively had lateral spinopelvic hip radiographs for skeletal and implant measurements. Intra-operative acetabular component position was determined according to the pre-operative spinal mobility...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28033151/spinal-realignment-for-adult-deformity-three-column-osteotomies-alter-total-hip-acetabular-component-positioning
#6
Jeffrey J Barry, Altug Yucekul, Alexander A Theologis, Erik N Hansen, Christopher Ames, Vedat Deviren
INTRODUCTION: A goal of adult spinal deformity surgery is correction of sagittal imbalance by increasing lumbar lordosis (LL), allowing a previously retroverted pelvis to normalize as evidenced by decreases in pelvic tilt (PT). Realignment of pelvic orientation may alter the position of preexisting total hip arthroplasties (THAs). METHODS: Twenty-seven patients with unilateral THA who underwent thoracolumbar fusions for adult spinal deformity from the pelvis to L1 or above were retrospectively reviewed (levels fused, 10...
February 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28032224/asymmetric-c7-pedicle-subtraction-osteotomy-for-correction-of-rigid-cervical-coronal-imbalance-secondary-to-post-traumatic-heterotopic-ossification-a-case-report-description-of-a-novel-surgical-technique-and-literature-review
#7
Alexander A Theologis, Kate D Bellevue, Erion Qamirani, Christopher P Ames, Vedat Deviren
PURPOSE: Deformities of the cervical spine are uncommon in the coronal plane. In this report, a unique case of a 31-year-old male with a fixed, 30° left coronal deformity due to heterotopic ossification 3 years status post poly-trauma was treated with an asymmetric C7 pedicle subtraction osteotomy (PSO). METHODS: Case report. RESULTS: Pre-operatively, the patient had a fixed 45-degree left tilt of his neck and radiographs demonstrated a rigid 30° scoliosis, 7 cm coronal imbalance, and 4 cm negative sagittal balance, diffuse bridging bone between the spinous processes and the facet joints of C5 to T1 bilaterally...
December 28, 2016: European Spine Journal
https://www.readbyqxmd.com/read/28025024/cervical-sagittal-alignment-in-adolescent-idiopathic-scoliosis-patients-lenke-type-1-6
#8
Lianlei Wang, Xinyu Liu
OBJECTIVE: We collected the radiographic and clinical data of 129 AIS patients (Lenke type 1-6) to analyze the characteristics of cervical sagittal alignment in adolescent idiopathic scoliosis patients and the correlations between cervical sagittal alignment and global sagittal alignment, and clinical symptoms. METHODS: 129 patients with AIS and 48 adolescent volunteers were included in this study. The angles of the main thoracic curve, proximal thoracic curve, thoracolumbar curve, lumbar curve, C2-7 Cobb angle, T5-12 Cobb angle, L1-5 Cobb angle, pelvic incidence, pelvic tilt, sacrum slop, C2-7 sagittal vertical axis, C7-S1 sagittal vertical axis, and T1 pelvic angle were included in radiographic measurements...
December 23, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27977581/sagittal-spinopelvic-parameters-in-2-level-lumbar-degenerative-spondylolisthesis-a-retrospective-study
#9
COMPARATIVE STUDY
Tao Wang, Hui Wang, Huan Liu, Lei Ma, Feng-Yu Liu, Wen-Yuan Ding
The purpose of our study is to evaluate sagittal parameters in 2-level lumbar degenerative spondylolisthesis (DS) (TLDS).A total of 15 patients with TLDS, 40 patients with single-level DS (SLDS), and 30 normal volunteers as control were included in our study. All subjects performed on full spine X-ray. Two categorized data were analyzed: patient characteristics-age, sex, body mass index, radiographic parameters-pelvic incidence (PI), pelvic tilt (PT), lumbar lordosis (LL), sacral slope (SS), PI-LL, Cobb between the fifth thoracic vertebral and 12th thoracic vertebral (T5-T12), sagittal vertical axis (SVA) Cobb angle of spondylolisthesis level (CSL), ratio of PT to SS (PT/SS), CSL/LL, variation trend of SS over PI, and LL over PI...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27935449/multiple-hook-fixation-in-revision-spinal-deformity-surgery-for-patients-with-a-previous-multilevel-fusion-mass-technical-note-and-preliminary-outcomes
#10
Ning Liu, Kirkham B Wood
OBJECTIVE A previous multilevel fusion mass encountered during revision spinal deformity surgery may obscure anatomical landmarks, making instrumentation unworkable or incurring substantial blood loss and operative time. This study introduced a surgical technique of multiple-hook fixation for fixating previous multilevel fusion masses in revision spinal deformity surgeries and then evaluated its outcomes. METHODS Patients with a previous multilevel fusion mass who underwent revision corrective surgery down to the lumbosacral junction were retrospectively studied...
December 9, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27922572/comparative-study-between-pedicle-subtraction-osteotomy-pso-and-closing-opening-wedge-osteotomy-fish-mouth-pso-for-sagittal-plane-deformity-correction
#11
Jong-Hwa Park, Seung-Jae Hyun, Ki-Jeong Kim, Tae-Ahn Jahng
STUDY DESIGN: A retrospective study. OBJECTIVE: To evaluate the safety and efficacy of closing-opening wedge osteotomy (COWO: fish-mouth pedicle subtraction osteotomy [PSO]), for sagittal plane deformity correction and to compare the radiographical outcomes for patients undergoing conventional- and fish-mouth PSO. SUMMARY OF BACKGROUND DATA: The COWO has been developed to achieve a large magnitude of correction at a single level for patients with severe fixed sagittal imbalance...
December 2, 2016: Spine
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
#12
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/27858238/instrumentation-failure-following-pedicle-subtraction-osteotomy-the-role-of-rod-material-diameter-and-multi-rod-constructs
#13
Andrea Luca, Claudia Ottardi, Maurizio Sasso, Liliana Prosdocimo, Luigi La Barbera, Marco Brayda-Bruno, Fabio Galbusera, Tomaso Villa
PURPOSE: Pedicle subtraction osteotomy (PSO) has a complication rate noticeably higher than other corrective surgical techniques used for the treatment of spinal sagittal imbalance. In particular, rod breakage and pseudoarthrosis remain burning issues of this technique. Goal of this study was to investigate the biomechanical performance of several hardware constructs. METHODS: The study was performed using two validated finite element models of the lumbosacral spine (L1-S1) incorporating a PSO on L3 and L4, respectively...
November 17, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27854109/effect-of-mono-or-bisegmental-lordosizing-fusion-on-short-term-global-and-index-sagittal-balance-a-radiographic-study
#14
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/27847576/surgical-outcomes-of-post-fusion-lumbar-flatback-deformity-with-sagittal-imbalance
#15
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/27831489/increased-sagittal-vertical-axis-is-associated-with-less-effective-control-of-acute-pain-following-vertebroplasty
#16
Y-C Kim, D H Bok, H-G Chang, S W Kim, M S Park, J K Oh, J Kim, T-H Kim
OBJECTIVES: Although vertebroplasty is very effective for relieving acute pain from an osteoporotic vertebral compression fracture, not all patients who undergo vertebroplasty receive the same degree of benefit from the procedure. In order to identify the ideal candidate for vertebroplasty, pre-operative prognostic demographic or clinico-radiological factors need to be identified. The objective of this study was to identify the pre-operative prognostic factors related to the effect of vertebroplasty on acute pain control using a cohort of surgically and non-surgically managed patients...
November 2016: Bone & Joint Research
https://www.readbyqxmd.com/read/27792114/restrained-differential-growth-the-initiating-event-of-adolescent-idiopathic-scoliosis
#17
Tom Joris Crijns, Agnita Stadhouder, Theodoor Henri Smit
STUDY DESIGN: Experimental model study and a short review of literature. OBJECTIVE: The purpose of this study was to explore a new hypothesis suggesting that the curvatures seen in adolescent idiopathic scoliosis (AIS) originate from restrained differential growth between the vertebral column and the surrounding musculo-ligamentary structures. SUMMARY OF BACKGROUND DATA: Despite decades of research, there is no generally accepted theory on the physical origin of the severe spinal deformations seen in adolescent idiopathic scoliosis...
October 25, 2016: Spine
https://www.readbyqxmd.com/read/27781192/staged-correction-of-severe-thoracic-kyphosis-in-patients-with-multilevel-osteoporotic-vertebral-compression-fractures
#18
Eyal Behrbalk, Ofir Uri, Yoram Folman, Marcus Rickert, Radek Kaiser, Bronek Maximilian Boszczyk
Study Design Technical report. Objective Multilevel osteoporotic vertebral compression fractures may lead to considerable thoracic deformity and sagittal imbalance, which may necessitate surgical intervention. Correction of advanced thoracic kyphosis in patients with severe osteoporosis remains challenging, with a high rate of failure. This study describes a surgical technique of staged vertebral augmentation with osteotomies for the treatment of advanced thoracic kyphosis in patients with osteoporotic multilevel vertebral compression fractures...
November 2016: Global Spine Journal
https://www.readbyqxmd.com/read/27779606/surgical-and-radiographic-outcomes-after-pedicle-subtraction-osteotomy-according-to-surgeon-s-experience
#19
Ho Yong Choi, Seung-Jae Hyun, Ki-Jeong Kim, Tae-Ahn Jahng, Hyun-Jib Kim
STUDY DESIGN: Retrospective case series. OBJECTIVE: To evaluate and compare the surgical, radiographic, and clinical outcomes of pedicle subtraction osteotomy (PSO) according to surgeon's experience. SUMMARY OF BACKGROUND DATA: Although PSO has been widely used to correct spinal deformities, it still remains technically demanding procedure with high complications. METHODS: Comparative analysis of 40 consecutive patients treated with lumbar PSOs was performed...
October 24, 2016: Spine
https://www.readbyqxmd.com/read/27704473/direct-visualization-of-neurotransmitters-in-rat-brain-slices-by-desorption-electrospray-ionization-mass-spectrometry-imaging-desi-ms
#20
Anna Maria A P Fernandes, Pedro H Vendramini, Renan Galaverna, Nicolas V Schwab, Luciane C Alberici, Rodinei Augusti, Roger F Castilho, Marcos N Eberlin
Mass spectrometry imaging (MSI) of neurotransmitters has so far been mainly performed by matrix-assisted laser desorption/ionization (MALDI) where derivatization reagents, deuterated matrix and/or high resolution, or tandem MS have been applied to circumvent problems with interfering ion peaks from matrix and from isobaric species. We herein describe the application of desorption electrospray ionization mass spectrometry imaging (DESI)-MSI in rat brain coronal and sagittal slices for direct spatial monitoring of neurotransmitters and choline with no need of derivatization reagents and/or deuterated materials...
October 4, 2016: Journal of the American Society for Mass Spectrometry
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