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https://www.readbyqxmd.com/read/28190488/effect-of-a-titanium-cage-as-a-stand-alone-device-on-biomechanical-stability-in-the-lumbosacral-spine-of-canine-cadavers
#1
M Teunissen, A J van der Veen, T H Smit, M A Tryfonidou, B P Meij
Degenerative lumbosacral stenosis is a common disease in dogs characterised by intervertebral disc herniation, loss of disc height and stenosis. Decompressive dorsal laminectomy and partial discectomy can cause spinal instability and worsen foraminal stenosis. Pedicle screw and rod fixation (PSRF) with an intervertebral body cage allows for distraction and restoration of disc height and restores foraminal apertures. The aim of this study was to evaluate the ex vivo biomechanical properties of a titanium intervertebral cage alone and in combination with PSRF in the lumbosacral spine of dogs...
February 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28152193/impact-of-low-weight-severity-and-menstrual-status-on-bone-in-adolescent-girls-with-anorexia-nervosa
#2
Nurgun Kandemir, Kendra Becker, Meghan Slattery, Shreya Tulsiani, Vibha Singhal, Jennifer J Thomas, Kathryn Coniglio, Hang Lee, Kamryn T Eddy, Anne Klibanski, Madhusmita Misra
Clinicians currently use different low-weight cut-offs both to diagnose anorexia nervosa (AN) and to determine AN severity in adolescent girls. The purpose of this study was to evaluate the clinical utility of existing cut-offs and severity criteria by determining which are most strongly associated with risk for low bone mineral density (BMD). Height adjusted BMD Z scores were calculated for 352 females: 262 with AN and 90 healthy controls (controls) (12-20.5 years), using data from the BMD in Childhood Study, for the lumbar spine, whole body less head, and total hip...
February 2, 2017: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/28119439/successful-treatment-of-tumour-induced-osteomalacia-after-resection-of-an-oral-peripheral-ossifying-fibroma
#3
Mark Anthony Santiago Sandoval, Majorie Amoroto Palermo, Ryner Carrillo, Rafael Bundoc, Jose Ma Carnate, Romelito Jose Galsim
Tumour-induced osteomalacia is a paraneoplastic syndrome wherein bone is affected by a hormone from a tumour that causes renal phosphate wasting and hypophosphataemia. Here, we present the case of a 31-year-old man who has been suffering from generalised bone pains and a spine deformity that led to loss of height. Pertinent findings are low serum phosphorus, low vitamin D and decreased bone mineral density. These findings led to a diagnosis of osteomalacia. However, the finding of an oral mass raised some questions as to what role it plays in the patient's disease...
January 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28090452/classifying-thoracolumbar-fractures-role-of-quantitative-imaging
#4
REVIEW
Fernando Ruiz Santiago, Pablo Tomás Muñoz, Elena Moya Sánchez, Marta Revelles Paniza, Alberto Martínez Martínez, Antonio Luis Pérez Abela
This article describes different types of vertebral fractures that affect the thoracolumbar spine and the most relevant contributions of the different classification systems to vertebral fracture management. The vertebral fractures types are based on the three columns model of Denis that includes compression, burst, flexion-distraction and fracture-dislocation types. The most recent classifications systems of these types of fractures are reviewed, including the Thoracolumbar Injury Classification and Severity score (TLICS) and the Arbeitsgemeinschaft für Osteosynthesefragen Spine Thoracolumbar Injury Classification and Severity score (AOSpine-TLICS)...
December 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/27863890/normal-values-of-cervical-vertebral-measurements-according-to-age-and-sex-in-ct
#5
Serhad Omercikoglu, Erhan Altunbas, Haldun Akoglu, Ozge Onur, Arzu Denizbasi
INTRODUCTION: Atlantodental interval (ADI), basion-dental interval (BDI) and the thickness of prevertebral soft tissue (TOPST) measured in lateral cervical radiographs were reported to be useful indicators and indirect signs of underlying cervical spine injuries. However, cervical computed tomography (MDCT) is the first method of imaging used in all trauma patients and upper normal limits (UNLs) of cervical distances according to age and sex are undetermined. Therefore, we aimed to calculate these metrics...
November 9, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27779600/lumbar-spine-paraspinal-muscle-and-intervertebral-disc-height-changes-in-astronauts-after-long-duration-spaceflight-on-the-international-space-station
#6
Douglas G Chang, Robert M Healey, Alexander J Snyder, Jojo V Sayson, Brandon R Macias, Dezba G Coughlin, Jeannie F Bailey, Scott E Parazynski, Jeffrey C Lotz, Alan R Hargens
STUDY DESIGN: Prospective case series. OBJECTIVE: Evaluate lumbar paraspinal muscle (PSM) cross-sectional area and intervertebral disc (IVD) height changes induced by a 6-month space mission on the International Space Station. The long-term objective of this project is to promote spine health and prevent spinal injury during space missions and here on Earth. SUMMARY OF BACKGROUND DATA: National Aeronautics and Space Administration (NASA) crewmembers have a 4...
December 15, 2016: Spine
https://www.readbyqxmd.com/read/27757680/evaluation-of-a-new-approach-to-compute-intervertebral-disc-height-measurements-from-lateral-radiographic-views-of-the-spine
#7
Brett T Allaire, M Clara DePaolis Kaluza, Alexander G Bruno, Elizabeth J Samelson, Douglas P Kiel, Dennis E Anderson, Mary L Bouxsein
PURPOSE: Current standard methods to quantify disc height, namely distortion compensated Roentgen analysis (DCRA), have been mostly utilized in the lumbar and cervical spine and have strict exclusion criteria. Specifically, discs adjacent to a vertebral fracture are excluded from measurement, thus limiting the use of DCRA in studies that include older populations with a high prevalence of vertebral fractures. Thus, we developed and tested a modified DCRA algorithm that does not depend on vertebral shape...
January 2017: European Spine Journal
https://www.readbyqxmd.com/read/27707846/radiographic-changes-in-the-cervical-spine-following-anterior-arthrodesis-a-long-term-analysis-of-166-patients
#8
Raj D Rao, Donald R Gore, Shu-Jie Tang, Brandon J Rebholz, Narayan Yoganandan, Mei Wang
BACKGROUND: Adjacent segment degeneration frequently develops following anterior cervical discectomy and fusion. The objectives of the present study were to characterize the long-term evolution of degenerative radiographic changes at segments adjacent to anterior cervical fusion and to identify factors associated with the development of these changes, including the preoperative condition of the cervical spine and parameters related to arthrodeses. METHODS: One hundred and sixty-six patients who underwent anterior cervical discectomy and fusion for symptomatic cervical spondylosis or disc herniation were followed radiographically for a mean time of 12...
October 5, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27683690/third-generation-percutaneous-vertebral-augmentation-systems
#9
REVIEW
Daniele Vanni, Renato Galzio, Anna Kazakova, Andrea Pantalone, Giovanni Grillea, Marcello Bartolo, Vincenzo Salini, Vincenzo Magliani
Currently, there is no general consensus about the management of osteoporotic vertebral fractures (OVF). In the past, conservative treatment for at least one month was deemed appropriate for the majority of vertebral fractures. When pain persisted after conservative treatment, it was necessary to consider surgical interventions including: vertebroplasty for vertebral fractures with less than 30% loss of height of the affected vertebral body and kyphoplasty for vertebral fractures with greater than 30% loss of height...
March 2016: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/27586096/changing-threshold-for-ais-scores-of-thoracolumbar-compression-fractures
#10
Hesham M Soliman, Ha Son Nguyen, Anjishnu Banerjee, Frank Pintar, Narayan Yoganandan, Shekar Kurpad, Dennis Maiman
BACKGROUND: The Abbreviated Injury Scale (AIS) is an anatomical-based coding system created by the Association for the Advancement of Automotive Medicine, utilized to classify and code injuries resulting from trauma, in order of severity. According to the latest version, all Thoraco-Lumbar Compression Fractures (TLCF), even without injury to other spine components and with >20% loss of height, were branded AIS 3 injuries, reflecting a serious threat to life or permanent disability...
September 2016: Traffic Injury Prevention
https://www.readbyqxmd.com/read/27576207/hypophosphatasia-natural-history-study-of-101-affected-children-investigated-at-one-research-center
#11
Michael P Whyte, Deborah Wenkert, Fan Zhang
Hypophosphatasia (HPP) is the inborn-error-of-metabolism that features deficient activity of the tissue-nonspecific isoenzyme of alkaline phosphatase (TNSALP). Resultant extracellular accumulation of inorganic pyrophosphate, a TNSALP substrate and potent inhibitor of mineralization, typically leads to tooth loss and sometimes to rickets or osteomalacia. HPP's remarkably broad-ranging severity is largely explained by autosomal dominant versus autosomal recessive transmission from among several hundred usually missense mutations positioned throughout the gene that encodes TNSALP...
December 2016: Bone
https://www.readbyqxmd.com/read/27565894/the-relationship-between-modic-changes-and-intervertebral-disc-degeneration
#12
EDITORIAL
Juhani H Määttä, Alex MacGregor, Jaro Karppinen, Frances M K Williams
BACKGROUND: Recent reported results have added to the weight of evidence supporting association between disc degeneration and Modic changes. Endplate or Modic changes are also associated with increased body mass index. The most recent study from Teichtahl et al. titled 'Modic changes in the lumbar spine and their association with body composition, fat distribution and intervertebral disc height - a 3.0 T-MRI study' showed associations of Modic changes with quantitatively measured reduced disc height and fat mass index...
2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27542623/reliability-of-smartphone-based-teleradiology-for-evaluating-thoracolumbar-spine-fractures
#13
Ido Stahl, Daniel Dreyfuss, Dror Ofir, Lior Merom, Michael Raichel, Nir Hous, Doron Norman, Elias Haddad
BACKGROUND CONTEXT: Timely interpretation of computed tomography (CT) scans is of paramount importance in diagnosing and managing spinal column fractures, which can be devastating. Out-of-hospital, on-call spine surgeons are often asked to evaluate CT scans of patients who have sustained trauma to the thoracolumbar spine to make diagnosis and to determine the appropriate course of urgent treatment. Capturing radiographic scans and video clips from computer screens and sending them as instant messages have become common means of communication between physicians, aiding in triaging and transfer decision-making in orthopedic and neurosurgical emergencies...
August 16, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27497753/measurement-of-kyphosis-and-vertebral-body-height-loss-in-traumatic-spine-fractures-an-international-study
#14
Said Sadiqi, Jorrit-Jan Verlaan, A Mechteld Lehr, Jens R Chapman, Marcel F Dvorak, Frank Kandziora, S Rajasekaran, Klaus J Schnake, Alexander R Vaccaro, F Cumhur Oner
PURPOSE: To investigate whether wide variations are seen in the measurement techniques preferred by spine surgeons around the world to assess traumatic fracture kyphosis and vertebral body height loss (VBHL). METHODS: An online survey was conducted at two time points among an international community of spine trauma experts from all world regions. The first survey (TL-survey) focused on the thoracic, thoracolumbar and lumbar spine, the second survey (C-survey) on the subaxial cervical spine...
August 6, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27496720/which-patients-risk-segmental-kyphosis-after-short-segment-thoracolumbar-fracture-fixation-with-intermediate-screws
#15
Matteo Formica, Luca Cavagnaro, Marco Basso, Andrea Zanirato, Lamberto Felli, Carlo Formica, Alberto Di Martino
INTRODUCTION: The use of intermediate screws in fractured vertebrae has been proposed to decrease the number of fused levels in thoracolumbar fractures and to enable short fixations. The aim of this study was to evaluate the results of this technique and to establish predictive factors involved in loss of segmental kyphosis correction (LKC). METHODS: Forty-three patients who underwent short-segment spinal fixation with intermediate screws for a thoracolumbar spine fracture in a two-year time period were enrolled in the study...
October 2016: Injury
https://www.readbyqxmd.com/read/27445467/assessment-risk-of-osteoporosis-in-chinese-people-relationship-among-body-mass-index-serum-lipid-profiles-blood-glucose-and-bone-mineral-density
#16
Rongtao Cui, Lin Zhou, Zuohong Li, Qing Li, Zhiming Qi, Junyong Zhang
OBJECTIVE: The aim of our study was to investigate the relationship among age, sex, body mass index (BMI), serum lipid profiles, blood glucose (BG), and bone mineral density (BMD), making an assessment of the risk of osteoporosis. MATERIALS AND METHODS: A total of 1,035 male and 3,953 female healthy volunteers (aged 41-95 years) were recruited by an open invitation. The basic information, including age, sex, height, weight, waistline, hipline, menstrual cycle, and medical history, were collected by a questionnaire survey and physical examination...
2016: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/27441929/the-anterior-subcutaneous-pelvic-fixator-infix-in-an-anterior-posterior-compression-type-3-pelvic-fracture
#17
Rahul Vaidya, Fred Tonnos, Kerellos Nasr, Praveen Kanneganti, Gannon Curtis
OBJECTIVES: The purpose of this video is to describe the equipment, anatomy, and surgical technique of anterior subcutaneous pelvic fixation (INFIX) using pedicle screws and a rod in an Anterior Posterior Compression 3 pelvic fracture, as well as how to distract in lateral compression fractures. METHODS: The equipment required includes standard spine pedicle screw sets with long screws, 70-110 mm in length, and 7 or 8 mm in diameter. The approach is a mini open and one needs to be familiar with the iliac oblique, obturator outlet, and obturator inlet views...
August 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27401728/pubertal-timing-and-bone-phenotype-in-early-old-age-findings-from-a-british-birth-cohort-study
#18
Diana Kuh, Stella G Muthuri, Adam Moore, Tim J Cole, Judith E Adams, Cyrus Cooper, Rebecca Hardy, Kate A Ward
OBJECTIVES: To investigate the effect of pubertal timing, assessed in adolescence, on bone size, strength and density in men and women in early old age. DESIGN: A British birth cohort study with prospective indicators of pubertal timing based on age at menarche, clinical assessment of pubertal stage, and growth tempo from serial height measures, and bone measures derived from peripheral quantitative computed tomography (pQCT) and dual-energy X-ray absorptiometry (DXA) at 60-64 years of age among 866 women and 792 men...
August 2016: International Journal of Epidemiology
https://www.readbyqxmd.com/read/27399456/177%C3%A2-largest-series-of-mild-moderate-motor-vehicle-accident-associated-thoracolumbar-compression-fractures-prognosis-and-outcome
#19
Hesham M Soliman, Ha Nguyen, Frank A Pintar, Narayan Yoganandan, Shekar N Kurpad, Dennis J Maiman
INTRODUCTION: According to the latest version of the Abbreviated Injury Scale (AIS), all Thoraco-Lumbar Compression Fractures (TLCF) with >20% loss of height, were branded code 3 injuries, reflecting a threat for life or permanent disability. However, clinical observation suggests that that TLCF with <40% loss of height and without neurological deficits, have been noted to have a better clinical prognosis, prompting the need to segregate these injuries differently, revise the classification, and review outcomes...
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27387197/clinical-and-radiological-factors-affecting-progressive-collapse-of-acute-osteoporotic-compression-spinal-fractures
#20
Sergei Goldstein, Yossi Smorgick, Yigal Mirovsky, Yoram Anekstein, Ronen Blecher, Sigal Tal
Osteoporotic compression spine fractures have a different clinical course and outcomes when compared to spinal fractures occurring in the younger population. Only a few studies have investigated the risk factors for progressive osteoporotic compression spine fractures. The purpose of this study was to investigate clinical and radiological factors related to progressive collapse following acute osteoporotic compression spine fractures. We retrospectively identified all patients treated for thoracolumbar fractures in our institution between January 2008 and July 2013...
September 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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