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https://www.readbyqxmd.com/read/28323718/posterior-distraction-and-instrumentation-cannot-always-reduce-displaced-and-rotated-posterosuperior-fracture-fragments-in-thoracolumbar-burst-fracture
#1
Xiao-Bin Wang, Guo-Hua Lü, Jing Li, Bing Wang, Chang Lu, Kevin Phan
STUDY DESIGN: A retrospective clinical study. OBJECTIVE: To determine the imaging features that can be used to predict failure of reduction of a retropulsed fracture fragment by posterior ligamentotaxis in thoracolumbar burst fractures. SUMMARY OF BACKGROUND DATA: Posterior instrumentation and distraction with ligamentotaxis has been successfully used to shift retropulsed fragments anteriorly in thoracolumbar burst fractures. However, posterior longitudinal ligament rupture can lead to treatment failure...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28323696/a-new-angled-chisel-for-microendoscopic-decompressive-laminotomy
#2
Shu Nakamura, Motohide Shibayama, Fujio Ito, Yasushi Miura
STUDY DESIGN: A retrospective comparative series study. OBJECTIVE: The aim of the study was to describe a new angled chisel (NAC) that facilitates the osteotomy in microendoscopic decompressive laminotomy (MEDL), and to analyze the clinical and radiologic outcomes using the tool. SUMMARY OF BACKGROUND DATA: MEDL for lumbar spinal stenosis is a minimally invasive surgery. The paraspinous unilateral approach for bilateral decompression can preserve the posterior structure better than other methods...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28320028/extent-of-decompression-of-lumbar-spinal-canal-after-endoscopic-surgery
#3
Naresh Kumar Dewanngan, Yad Ram Yadav, Vijay Singh Parihar, Shailendra Ratre, Yatin Kher, Pushpraj Bhatele
Introduction Endoscopic techniques are being used in lumbar disk disease and lumbar canal stenosis to decompress the spinal canal. The present study analyzed pre- and postoperative magnetic resonance imaging (MRI) measurements of the lumbar canal. Material and Methods This was a prospective study of 30 lumbar levels. Patients < 18 years of age with unilateral compression, previous surgery at the same level, and spinal instability were excluded. Endoscopic posterior decompression was used. Pre- and postoperative MRIs of all the patients were performed...
March 20, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28317555/the-cervical-spine-of-australopithecus-sediba
#4
Marc R Meyer, Scott A Williams, Peter Schmid, Steven E Churchill, Lee R Berger
Cervical vertebrae are rare in the early hominin fossil record, presenting a challenge for understanding the evolution of the neck and head carriage in hominin evolution. Here, we examine the cervical vertebrae of Australopithecus sediba, which unlike other South African taxa is known from associated cervical vertebrae. The A. sediba cervical vertebrae exhibit human-like values for wedging, pedicle cross-sectional areas, and articular facet heights, indicating reduced ventral loading relative to African apes...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28317447/intraspinal-bronchogenic-cyst-series-of-case-reports-and-literature-review
#5
Xueying Ma, Wenfei Li, Chen Niu, Fengli Liang, Liping Guo, Tahir Mehmood Shakir, Ming Zhang
PURPOSE: Spinal bronchogenic cysts (SBCs) are rare congenital lesions. The clinical and imaging characteristics and treatment of SBCs are not well known. We studied three cases of SBCs retrospectively, which were registered in our department and analyzed eight case reports which were all published in English, focusing on providing a deeper knowledge of SBCs. METHODS: Three patients with SBCs registered in our department were retrospectively reviewed. Eight reported SBCs cases published from 1992 to 2015 were enrolled in our study...
March 20, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28296378/-type-i-chiari-malformation-associated-with-cerebellar-atrophy-case-report
#6
Luis Rafael Moscote-Salazar, Willem Guillermo Calderón-Miranda, Hernando Raphael Alvis-Miranda, Ángel Lee-Aguirre, Gabriel Alcalá-Cerra
Chiari malformation is characterized by caudal displacement of the cerebellar tonsils that penetrate into the spinal canal through the foramen magnum, achieving reach the atlas or axis. trunk and any drop of the fourth ventricle is observed. Typically is seen in young adults. In some cases scoliosis and Syringomyelic cavities may occur. The authors present (as far as they know) the first case in the literature with long term follow-up, of a caucasian woman with an unusual form of cerebellar atrophy and Chiari Type I malformation, suffering from weakness in his upper and lower extremities with rapidly progression...
March 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28279989/fluid-signal-structures-in-the-cervical-spinal-cord-on-mri-anterior-median-fissure-versus-central-canal
#7
T A Tomsick, E Peak, L Wang
BACKGROUND AND PURPOSE: Hyperintense fluid-signal anterior median fissure and hyperintense foci resembling the central canal are seen on cervical spine axial T2 MR imaging. They may also be associated with a channel-like T2-hyperintense craniocaudad line on sagittal images. We hypothesized that the hyperintense foci and the sagittal line may represent the base of the anterior median fissure. MATERIALS AND METHODS: In this exploratory study, 358 cervical MR images were analyzed for recording and comparing the incidence/numbers of hyperintense foci, anterior median fissure, and sagittal line as hyperintense foci, anterior median fissure, and sagittal line per patient when present alone or together, both with and without the sagittal line...
March 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28275813/osteochondroma-mimicking-meningioma-case-report-and-literature-update
#8
Ashwath J Sampath, Douglas C Miller, Fassil B Mesfin, Julia R Crim
We report a case of an osteochondroma in a 47-year-old woman presenting with a 2-month history of thoracic back pain that radiated down her left arm. Based on imaging features, the osteochondroma was initially thought to represent a calcified meningioma. The unusual features of the case include the location of the tumor, patient age, the erosion of the vertebra, and the confusing neuroradiological features. We review reported cases in which a solitary costal osteochondroma impinges on the neural foramina or central spinal canal and we discuss reasons for the misdiagnosis in our case...
March 8, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28271408/moving-or-being-moved-that-makes-a-difference
#9
Hans Straka, Boris P Chagnaud
During head/body movements, gaze stability is ensured by transformation of motion-related sensory signals into respective motor commands. Passively induced motion in all vertebrates including amphibians evokes a robust vestibulo-ocular reflex, suggesting an equally important role of this motor reaction during actively induced motion. However, during self-induced movements including locomotion, motor efference copies offer a convenient additional substrate for counteracting retinal image displacements. During such locomotor activity in Xenopus laevis tadpoles, spinal central pattern generator-derived efference copies elicit spatio-temporally specific eye movements, which are functionally appropriate to offset swimming-related retinal image displacements...
March 7, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28268308/wearable-deep-body-thermometers-and-their-uses-in-continuous-monitoring-for-daily-healthcare
#10
Ming Huang, Toshiyo Tamura, Takumi Yoshimura, Tadahiro Tsuchikawa, Shigehiko Kanaya
This paper introduces noninvasive deep body thermometers suitable for continuous deep body temperature (DBT) measurement. On the basis of their features, they were used in DBT monitoring for daily healthcare. A thermometer based on the dual-heat-flux method (T_DHFM), and an aural canal thermistor (ACT), were used in two studies of daily healthcare. The medical device CoreTemp by Terumo, based on the zero-heat-flux method, was also used for a DBT reference. The first study focused on preventing heat stroke in a high-temperature and high-humidity environment, while the other focused on the temperature monitoring of patients with spinal cord injuries...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267911/-360-degrees-instrumentation-for-cervical-instability-due-to-metastatic-bone-disease-case-report
#11
J E Vargas-Jasso, M A Clara-Altamirano, G Reyes-Soto, M Cuéllar-Hubbe, J A Mejía-Pérez
INTRODUCTION: The spine is the most common site for bone metastases; being the breast, prostate and lung cancer which have most affected. The thoracic spine is involved in 70% of cases, followed by the lumbar and cervical region. MATERIAL AND METHODS: This is a 59 years old female diagnosed with breast adenocarcinoma and metastatic bone disease in cervical spine C2, C3 level and instability of that segment because of a compression fracture of C3 greater than 80% without invasion of the spinal canal, she begins with paresthesias of upper limbs...
July 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28267910/-surgical-management-of-spinal-deformity-in-a-patient-with-escobar-syndrome-review-of-the-literature
#12
M C Hernández-Hernández, J A Canales-Nájera, J S De La Cruz-Álvarez, M E Tena-Zanabria, J Matus-Jiménez
BACKGROUND: The non-lethal variant of the Escobar or multiple pterygium syndrome is an entity of autosomal recessive inheritance linked to the X chromosome; it is characterized by multiple pterygia (hence its name) located mainly in the neck (95%) and armpits (55%), as well as other orthopedic malformations such as a vertical talus, congenital hip dislocation, and congenital scoliosis. OBJECTIVE: To present an optional surgical technique for the management of severe spinal deformities...
July 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28260398/improved-diagnosis-of-cervical-spondylotic-myelopathy-with-contact-heat-evoked-potentials
#13
Catherine Jutzeler, Anett Ulrich, Barbara Huber, Jan Rosner, John Kramer, Armin Curt
The aim of this study was to reveal the sensitivity and responsiveness of contact heat evoked potentials (CHEPs) to assess cervical spondylotic myelopathy (CSM). A total of 81 patients with clinically and radiologically confirmed spinal cord compression were reviewed. All patients underwent full clinical examinations with combined recordings of segmental CHEPs and somatosensory evoked potentials (dSSEPs) compared to healthy controls. Cross-sectional area, maximal canal compression, and maximal spinal cord compression were determined based on T2-weighted magnetic resonance images (MRI)...
March 6, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28259263/prognosis-of-significant-intraoperative-neurophysiologic-monitoring-events-in-severe-spinal-deformity-surgery
#14
Benjamin T Bjerke, Daniel M Zuchelli, Venu M Nemani, Ronald G Emerson, Han Jo Kim, Oheneba Boachie-Adjei
BACKGROUND: Intraoperative neurophysiologic monitoring has become a standard tool for mitigating neurologic injury during spinal deformity surgery. Significant monitoring changes during deformity correction are relatively uncommon. This study characterizes precipitating factors for neurologic injury and relates significant events and postoperative neurologic prognosis. METHODS: All spinal deformity surgeries at a West African hospital over a 12-month period were reviewed...
March 2017: Spine Deformity
https://www.readbyqxmd.com/read/28258839/effect-of-spinal-needle-characteristics-on-measurement-of-spinal-canal-opening-pressure
#15
Venkatesh R Bellamkonda, Thomas C Wright, Christine M Lohse, Virginia R Keaveny, Eric C Funk, Michael D Olson, Torrey A Laack
OBJECTIVE: A wide variety of spinal needles are used in clinical practice. Little is currently known regarding the impact of needle length, gauge, and tip type on the needle's ability to measure spinal canal opening pressure. This study aimed to investigate the relationship between these factors and the opening-pressure measurement or time to obtain an opening pressure. METHODS: Thirteen distinct spinal needles, chosen to isolate the effects of length, gauge, and needle-point type, were prospectively tested on a lumbar puncture simulator...
January 28, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28256998/ambulatory-surgery-data-from-hospitals-and-ambulatory-surgery-centers-united-states-2010
#16
Margaret J Hall, Alexander Schwartzman, Jin Zhang, Xiang Liu
Objectives-This report presents national estimates of surgical and nonsurgical ambulatory procedures performed in hospitals and ambulatory surgery centers (ASCs) in the United States during 2010. Patient characteristics, including age, sex, expected payment source, duration of surgery, and discharge disposition are presented, as well as the number and types of procedures performed in these settings. Methods-Estimates in this report are based on ambulatory surgery data collected in the 2010 National Hospital Ambulatory Medical Care Survey (NHAMCS)...
February 2017: National Health Statistics Reports
https://www.readbyqxmd.com/read/28250774/a-giant-lumbar-pseudomeningocele-in-a-patient-with-neurofibromatosis-type-1-a-case-report
#17
Mauro Dobran, Maurizio Iacoangeli, Paolo Ruscelli, Martina Della Costanza, Davide Nasi, Massimo Scerrati
This is a rare case of giant lumbar pseudomeningocele with intra-abdominal extension in patient with neurofibromatosis type 1 (NF1). The patient's clinical course is retrospectively reviewed. A 34-year-old female affected by NF1 was referred to our institution for persistent low back pain and MRI diagnosis of pseudomeningocele located at L3 level with paravertebral extension. From the first surgical procedure by a posterior approach until the relapse of the pseudomeningocele documented by MRI, the patient underwent two subsequent posterior surgical procedures to repair the dural sac defect with fat graft and fibrin glue...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28248883/primary-leiomyosarcoma-of-the-spine-a-case-report-and-literature-review
#18
Yi Yang, Litai Ma, Lingli Li, Hao Liu
RATIONALE: Primary leiomyosarcoma of the bone was firstly reported by Evans and Sanerkin in 1965, whereas primary leiomyosarcoma of the vertebra is extremely rare. Because of the rarity of primary vertebral leiomyosarcoma, the diagnosis, treatment, and clinical outcome still remain controversial. Here we report a special case of primary leiomyosarcoma in the thoracic vertebra. PATIENT CONCERNS: A 47-year-old female patient was admitted to our institution with the chief complaint of persistent back pain for 4 weeks...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28247108/lateral-lipomyelomeningocele-of-the-hemicord-with-split-cord-malformation-type-i-revealed-by-3d-heavily-t2-weighted-mr-imaging
#19
Nobuya Murakami, Takato Morioka, Masako Ichiyama, Ryoko Nakamura, Nobuko Kawamura
BACKGROUND: Lipomyelomeningocele (LMMC) is defined by a low-lying tethered spinal cord protruding posteriorly from the spinal canal and terminating in a lipomatous mass in the subcutaneous meningeal sac. The coexistence of LMMC with split cord malformation (SCM) is rare. CLINICAL PRESENTATION: We report on a patient with laterally protruded LMMC arising from the hemicord of SCM type I. Direct coronal and axial views (instead of sagittal views) of 3D heavily T2-weighted MR imaging (3D-hT2WI) clearly demonstrated the topographical relationship between both of the hemicords, the bony septum, and nerve roots in the right subcutaneous meningeal sac...
February 28, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28243595/cns-metastases-from-bone-and-soft-tissue-sarcomas-in-children-adolescents-and-young-adults-are-they-really-so-rare
#20
Monika Bekiesinska-Figatowska, Agnieszka Duczkowska, Marek Duczkowski, Hanna Bragoszewska, Anna Romaniuk-Doroszewska, Beata Iwanowska, Sylwia Szkudlinska-Pawlak, Jaroslaw Madzik, Katarzyna Bilska, Anna Raciborska
Purpose. To check whether primary involvement of brain/spinal cord by bone/soft tissue sarcomas' metastases in children is as rare as described and to present various morphological forms of bone/soft tissue sarcomas' CNS metastases. Methods. Patients with first diagnosis in 1999-2014 treated at single center were included with whole course of disease evaluation. Brain/spinal canal magnetic resonance imaging (MRI)/computed tomography were performed in cases suspicious for CNS metastases. Extension from skull/vertebral column metastases was excluded...
2017: BioMed Research International
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