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https://www.readbyqxmd.com/read/28430051/reversible-postoperative-blindness-caused-by-bilateral-status-epilepticus-amauroticus-following-thoracolumbar-deformity-correction-case-report
#1
Tarik F Ibrahim, Rochelle T Sweis, Russ P Nockels
Postoperative vision loss (POVL) is a devastating complication and has been reported after complex spine procedures. Anterior ischemic optic neuropathy and posterior optic neuropathy are the 2 most common causes of POVL. Bilateral occipital lobe seizures causing complete blindness are rare and have not been reported as a cause of POVL after spine surgery with the patient prone. The authors report the case of a 67-year-old man without a history of seizures who underwent a staged thoracolumbar deformity correction and developed POVL 6 hours after surgery...
April 21, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28425068/analysis-of-cervical-sagittal-alignment-change-following-correction-of-thoracic-and-thoracolumbar-scheuermann-s-kyphosis
#2
Luigi Aurelio Nasto, Saggah Tarek Shalabi, Ana Belen Perez-Romera, Samiul Muquit, Amir Reza Ghasemi, Hossein Mehdian
PURPOSE: To analyse pre-operative and post-operative changes of cervical sagittal alignment (CSA) in Scheuermann's kyphosis (SK) patients. METHODS: 64 SK and 33 control patients were retrospectively reviewed. Whole spine X-rays obtained at pre-op, 3 months post-op and at latest follow-up were reviewed and ten separate CSA radiological parameters were measured. Patients were divided in three groups: thoracic SK (TK group, apex T6-T9, n = 40), thoracolumbar SK (TLK group, apex T10-T12, n = 24), and controls...
April 19, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28420845/suffocation-due-to-thoracic-deformity-caused-by-acromegaly
#3
Toshihiko Yoshizawa, Masayuki Iwazaki, Kei Jitsuiki, Kouhei Ishikawa, Hiromichi Ohsaka, Youichi Yanagawa
A 61-year-old man with gigantism and acromegaly choked and fell into a coma. Immediate tracheal intubation resulted in a return of his consciousness. Enhanced computed tomography indicated that the trachea and left main bronchus were compressed by the thoracic spine and sternum. He required tracheotomy and positive end-expiratory pressure to maintain his pulmonary function. This is the first case of suffocation due to a thoracic deformity associated with acromegaly. Physicians should focus on clearing the tracheal airway using computed tomography to elucidate the anatomical relationship between the trachea and surrounding structures in acromegalic patients suffering from dyspnea...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28419292/design-and-testing-of-2-novel-scores-that-predict-global-sagittal-alignment-utilizing-cervical-or-lumbar-plain-radiographs
#4
Ezequiel Goldschmidt, Federico Angriman, Bruno Ferreyro, 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, Chris Ames, Justin S Smith, Douglas Burton, D Kojo Hamilton
BACKGROUND: Global sagittal deformity is an established cause of disability. However, measurements of sagittal alignment are often ignored when patients present with symptoms localizing to the cervical or lumbar spine. OBJECTIVE: To develop scoring scales to predict the risk of sagittal malalignment in patients with only cervical or lumbar spine radiographs. METHODS: A retrospective review of a prospectively maintained multicenter adult spinal deformity database was performed...
April 17, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28414169/a-biomechanical-investigation-of-different-screw-head-designs-for-vertebral-derotation-in-scoliosis-surgery
#5
Po-Yi Liu, Po-Liang Lai, Chun-Li Lin
BACKGROUND CONTEXT: The posterior pedicle screw-rod system, which is widely used to correct spinal deformities, achieves a good correction rate in the frontal and coronal planes but not in the axial plane. Direct vertebral derotation (DVD) was developed to correct axial plane deformities. However, the design of screw head and body connection, in terms of monoaxial, polyaxial, and uniplanar screw, may influence the efficiency of DVD. PURPOSE: This study compared the efficiency of a newly designed uniplanar screw to that of monoaxial and polyaxial screws in the DVD maneuver...
April 13, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28412564/outcomes-of-patients-with-syringomyelia-undergoing-spine-deformity-surgery-do-large-syrinxes-behave-differently-than-small
#6
Amer F Samdani, Steven W Hwang, Anuj Singla, James T Bennett, Robert J Ames, Jeff S Kimball
BACKGROUND CONTEXT: A paucity of data exists studying outcomes of patients with syringomyelia undergoing spinal deformity correction. The literature does not stratify patients by syrinx size, which is likely a major contributor to outcomes. PURPOSE: To compare differences in outcomes between patients with large (≥ 4mm) and small syrinxes (< 4mm) undergoing spinal deformity correction. DESIGN: Retrospective review PATIENT SAMPLE: 28 patients (11 with large syrinx [LS, ≥ 4mm] and 17 with small syrinx [SS, < 4mm])...
April 12, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28411443/assessment-of-stability-during-gait-in-patients-with-spinal-deformity-a-preliminary-analysis-using-the-dynamic-stability-margin
#7
Anne-Laure Simon, Vipul Lugade, Kathie Bernhardt, A Noelle Larson, Kenton Kaufman
Daily living activities are dynamic, requiring spinal motion through space. Current assessment of spinal deformities is based on static measurements from full-spine standing radiographs. Tools to assess dynamic stability during gait might be useful to enhance the standard evaluation. The aim of this study was to evaluate gait dynamic imbalance in patients with spinal deformity using the dynamic stability margin (DSM). Twelve normal subjects and 17 patients with spinal deformity were prospectively recruited...
April 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28411110/impaired-wnt-signaling-and-the-spine-heterozygous-wnt1-mutation-causes-severe-age-related-spinal-pathology
#8
Riikka E Mäkitie, Tuukka Niinimäki, Miika T Nieminen, Camilla Schalin-Jäntti, Jaakko Niinimäki, Outi Mäkitie
BACKGROUND: WNT signaling plays a major role in bone and cartilage metabolism. Impaired WNT/β-catenin signaling leads to early-onset osteoporosis, but specific features in bone and other tissues remain inadequately characterized. We have identified two large Finnish families with early-onset osteoporosis due to a heterozygous WNT1 mutation c.652T>G, p.C218G. This study evaluated the impact of impaired WNT/β-catenin signaling on spinal structures. METHODS: Altogether 18 WNT1 mutation-positive (age range 11-76years, median 49years) and 14 mutation-negative subjects (10-77years, median 43years) underwent magnetic resonance imaging (MRI) of the spine...
April 11, 2017: Bone
https://www.readbyqxmd.com/read/28409128/the-use-of-bone-morphogenetic-proteins-bmp-and-pseudarthrosis-a-literature-review
#9
REVIEW
Oberdan Ribeiro Gonçalves de Oliveira, Saul Pinheiro Rebouças Martins, Wyvison Gomes de Lima, Marília Maia Gomes
Bone morphogenetic proteins (BMP) are multi-functional growth factors to promote bone healing with the proposal of less morbidity compared to the usual methods of bone graft harvest. Pseudoarthrosis occur when the fusion attempt fails, a solid fusion is not achieved, or there is motion across the segment leading to it, and it can be clinically symptomatic as pain, deformity, neurocompression, or hardware failure. BMPs are used at spinal fusion as a tool for the treatment of degenerative, traumatic, neoplastic and infectious conditions of the spine...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28402485/evolution-of-sagittal-imbalance-following-corrective-surgery-for-sagittal-plane-deformity
#10
Michael M McDowell, Zachary J Tempel, Gurpreet S Gandhoke, Nicholas K Khattar, D Kojo Hamilton, Adam S Kanter, David O Okonkwo
BACKGROUND: Sagittal balance in adult spinal deformity is a major predictor of quality of life. A temporary loss of paraspinal muscle force and somatic pain following spine surgery may limit a patient's ability to maintain posture. OBJECTIVE: To assess the evolution of sagittal balance and clinical outcomes during recovery from adult spinal deformity surgery. METHODS: Retrospective review of a prospective observational database identified a consecutive series of patients with sagittal vertical axis (SVA) > 40 mm undergoing adult deformity surgery...
April 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28399546/louis-a-goldstein-md-a-pioneer-in-spinal-deformity-surgery
#11
Daren McCalla, Paul T Rubery, Kenneth Foxx, Robert W Molinari, James O Sanders, Addisu Mesfin
: During the first half of the 20th century interest in spinal deformity grew due to common conditions of that era including polio and tuberculosis. This article will discuss Louis Arnold Goldstein, a visionary leader in spinal deformity surgery from Rochester, New York and one of the founders of the Scoliosis Research Society. Louis A. Goldstein was a talented surgeon, administrator and clinician scientist. He also started a spine surgery fellowship program that still bears his name and that continues to train complex spine surgeons...
April 10, 2017: Spine
https://www.readbyqxmd.com/read/28391381/osseointegration-improves-bone-implant-interface-of-pedicle-screws-in-the-growing-spine-a-biomechanical-and-histological-study-using-an-in-vivo-immature-porcine-model
#12
Kanako Shiba, Hiroshi Taneichi, Takashi Namikawa, Satoshi Inami, Daisaku Takeuchi, Yutaka Nohara
PURPOSE: Implant failure is a frequent complication in corrective surgery for early onset scoliosis, since considerable forces are acting on small and fragile vertebrae. Osseointegration showing biomechanical and histological improvement in bone-implant interface (BII) after dental implant placement has been well investigated. However, there are no studies regarding osseointegration in immature vertebral bone. The purpose was to evaluate the timecourse of biomechanical and histological changes at BII after pedicle screw placement using in vivo immature porcine model...
April 8, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28377974/an-arthrogrypotic-medical-doctor-with-cervical-kyphosis-and-thoracic-lordoscoliosis
#13
Manouchehr Safdarian, Mahdi Safdarian
Management of spinal deformities in a patient with arthrogryposis can be challenging for spine surgeons. The literature about the accompaniment of scoliosis; the most common spine deformity reported in arthrogryposis, is still poor. Moreover, the development of cervical kyphosis and thoracic lordoscoliosis in a patient with arthrogryposis is much rare. This paper reports a 26-year-old medical doctor with arthrogryposis who had underwent thoracic lordoscoliosis surgery about ten years ago with T6-L1 internal rods and is now presented with cervical kyphosis and C3-C4 cord stenosis, which made him a candidate for cervical cord decompression surgery...
June 2017: Bone Reports
https://www.readbyqxmd.com/read/28376922/epidemiological-characteristics-of-primary-spinal-osseous-tumors-in-eastern-china
#14
Zhenhua Zhou, Xudong Wang, Zhipeng Wu, Wending Huang, Jianru Xiao
BACKGROUND: Primary spinal osseous tumors are rare, yet they represent a difficult treatment paradigm because of the complexities of tumor resection and significant resistance to chemotherapy and radiation therapy. The geographic distribution of primary spinal osseous tumors throughout the world appears to be quite variable, with a very low incidence reported in Asian countries. METHODS: Data on 1209 cases of primary spinal osseous malignant and benign tumor cases diagnosed during the 20-year period of 1995 through 2015 in eastern China were analyzed...
April 4, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28375139/multi-stage-3d-2d-registration-for-correction-of-anatomical-deformation-in-image-guided-spine-surgery
#15
Michael Daniel Ketcha, Tharindu De Silva, Ali Uneri, Matthew Jacobson, Joseph Goerres, Gerhard Kleinszig, Sebastian Vogt, Jean-Paul Wolinsky, Jeffrey Siewerdsen
PURPOSE: A multi-stage image-based 3D-2D registration method is presented that maps annotations in a 3D image (e.g., point labels annotating individual vertebrae in preoperative CT) to an intraoperative radiograph in which the patient has undergone non-rigid anatomical deformation due to changes in patient positioning or due to the intervention itself. METHODS: The proposed method (termed msLevelCheck) extends a previous rigid registration solution (LevelCheck) to provide an accurate mapping of vertebral labels in the presence of spinal deformation...
April 4, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28368987/prevalence-and-predictors-of-pressure-injuries-from-spine-surgery-in-the-prone-position-do-body-morphological-changes-during-deformity-correction-increase-the-risks
#16
Shuxun Lin, Hwee Weng Dennis Hey, Eugene Tze Chun Lau, Kimberly-Anne Tan, Joseph Shantakumar Thambiah, Leok-Lim Lau, Naresh Kumar, Ka-Po Gabriel Liu, Hee-Kit Wong
STUDY DESIGN: Review of data and prospective study OBJECTIVE.: To investigate the prevalence and predictive factors of pressure injuries in spine surgery performed in the prone position, and to determine if morphological changes and truncal shifts occurring during deformity correction predispose to this complication. SUMMARY OF BACKGROUND DATA: Spine surgery performed in the prone position presents the risk of developing pressure injuries. This risk is potentially increased in deformity correction, as it tends to involve more extensive procedures, with associated longer operating times...
March 31, 2017: Spine
https://www.readbyqxmd.com/read/28368985/prediction-of-cervical-spinal-joint-loading-and-secondary-motion-using-a-musculoskeletal-multibody-dynamics-model-via-force-dependent-kinematics-approach
#17
Hao Diao, Hua Xin, Jun Dong, Xijing He, Dichen Li, Zhongmin Jin
STUDY DESIGN: A cervical spine biomechanical investigation using multibody dynamics. OBJECTIVE: To develop a comprehensive cervical spine multibody dynamics model incorporated with the force-dependent kinematics (FDK) approach, and to study the influence of soft tissue deformation on the joint loading prediction. SUMMARY OF BACKGROUND DATA: Musculoskeletal multibody dynamics models have been widely used to analyze joint loading. Current cervical spine musculoskeletal models, however, neglect the joint internal motion caused by soft tissue deformation...
March 31, 2017: Spine
https://www.readbyqxmd.com/read/28368866/spinopelvic-parameters-in-asymptomatic-subjects-without-spine-disease-and-deformity-a-systematic-review-with-meta-analysis
#18
Andriy Noshchenko, Lilian Hoffecker, Christopher M J Cain, Vikas V Patel, Evalina L Burger
STUDY DESIGN: A systematic review with meta-analysis. OBJECTIVE: To combine published data, focusing on the development of optimal spinopelvic parameters in adult asymptomatic subjects without spine deformity while taking into consideration the impact of potential confounders. SUMMARY OF BACKGROUND DATA: A well-grounded approach to define the optimal spinopelvic parameters is necessary for planning surgical correction of spine deformity. MATERIALS: Selection criteria: (1) randomized and nonrandomized prospective, cross-sectional, and retrospective studies; (2) participants: asymptomatic subjects without spine deformity aged above 18 years; (3) studied parameters: lumbar lordosis (LL), pelvic incidence, sacral slope, and pelvic tilt; (4) potential confounders: method of measurement, sex, age, ethnicity, weight, height, and body mass index...
March 31, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28368524/the-health-impact-of-adult-cervical-deformity-in-patients-presenting-for-surgical-treatment-comparison-to-united-states-population-norms-and-chronic-disease-states-based-on-the-euroquol-5-dimensions-questionnaire
#19
Justin S Smith, Breton Line, Shay Bess, Christopher I Shaffrey, Han Jo Kim, Gregory Mundis, Justin K Scheer, Eric Klineberg, Michael O'Brien, Richard Hostin, Munish Gupta, Alan Daniels, Michael Kelly, Jeffrey L Gum, Frank J Schwab, Virginie Lafage, Renaud Lafage, Tamir Ailon, Peter Passias, Themistocles Protopsaltis, Todd J Albert, K Daniel Riew, Robert Hart, Doug Burton, Vedat Deviren, Christopher P Ames, International Spine Study Group
BACKGROUND: Although adult cervical spine deformity (ACSD) is associated with pain and disability, its health impact has not been quantified in comparison to other chronic diseases. OBJECTIVE: To perform a comparative analysis of the health impact of symptomatic ACSD to US normative and chronic disease values using EQ-5D (EuroQuol-5 Dimensions questionnaire) scores. METHODS: ACSD patients presenting for surgical treatment were identified from a prospectively collected multicenter database...
March 24, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28367856/successful-management-of-gorham-stout-disease-in-the-cervical-spine-by-combined-conservative-and-surgical-treatments-a-case-report
#20
Satoshi Tateda, Toshimi Aizawa, Ko Hashimoto, Haruo Kanno, Susumu Ohtsu, Eiji Itoi, Hiroshi Ozawa
Gorham-Stout disease (GSD) is a rare condition characterized by intraosseous proliferation of endothelial-lined vessels and progressive osteolysis. The precise etiology and pathophysiology of the disease remain poorly understood. Current therapeutic options for GSD include chemotherapy, radiotherapy, and surgical resection, but the surgical treatment of GSD is difficult, especially in the spinal lesion. The indication of wide-margined resection was limited because of anatomical features. Herein, we report a case of GSD of the cervical spine in which the lesions were successfully stabilized with combined conservative and surgical treatments...
2017: Tohoku Journal of Experimental Medicine
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