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https://www.readbyqxmd.com/read/29452617/imaging-of-spondylodiscitis
#1
REVIEW
Meera Raghavan, Elena Lazzeri, Christopher J Palestro
Spondylodiscitis is an infection of the vertebral body or disc and may also involve the epidural space, posterior elements, and paraspinal soft tissues. It is a cause of morbidity and mortality, and warrants early diagnosis and prompt treatment. Diagnosis can be difficult because of nonspecific signs and symptoms. Magnetic resonance imaging is sensitive and specific and is the imaging modality of choice for spondylodiscitis. Gadolinium contrast can show the extent of soft tissue and bone phlegmon and abscess...
March 2018: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/29452284/-micro-endoscopic-vs-pure-endoscopic-surgery-for-spinal-intra-dural-mass-lesions-a-comparative-study-and-review
#2
Sivashanmugam Dhandapani, Madhivanan Karthigeyan
BACKGROUND: Endoscopy is increasingly being used for minimal invasiveness and panoramic visualization, with unclear efficacy and safety among spinal intradural lesions. OBJECTIVE: To compare micro-endoscopic and pure-endoscopic surgery for spinal intradural lesions. METHODS: Spinal intradural lesions operated by us using endoscopic/access ports were categorized 'micro-endoscopic' (predominant microscope use), or 'pure-endoscopic' (standalone endoscopy) surgery, and studied with respect to clinico-radiological features, techniques, peri-operative course, histopathology, clinical and radiological outcome at minimum of 3 months...
February 13, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29446979/synovial-sarcoma-mimicking-a-thoracic-dumbell-schwannoma-a-case-report
#3
Susanth Subramanian, Gandham Edmond Jonathan, Bimal Patel, Krishna Prabhu
INTRODUCTION: Synovial sarcoma is a rare mesenchymal malignant neoplasm that accounts for less than 10% of soft tissue sarcomas. About 95% of the sarcomas occur in the extremities. Primary synovial sarcomas of the spine are a rare tumor arising from the paravertebral regions, paraspinal muscles or epidural spaces. PURPOSE: To report an atypical radiological presentation of synovial sarcoma of the thoracic spine mimicking a nerve sheath tumor in an elderly adult and describe the management with review of the literature...
February 15, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29446170/magnetic-resonance-elastography-of-the-lumbar-back-muscles-a-preliminary-study
#4
Maud Creze, Soubeyrand Marc, Jin Long Yue, Olivier Gagey, Xavier Maître, Bellin Marie-France
INTRODUCTION: Back pain is associated with increased lumbar paraspinal muscle (LPM) stiffness identified by manual palpation and strain elastography. Recently, magnetic resonance elastography (MRE) has allowed the stiffness of muscle to be characterized noninvasively in vivo, providing quantitative 3D stiffness maps (elastograms). The aim of this study was to characterize the stiffness (shear modulus, SM) of the LPM (multifidus and erector spinae) using MRE. MATERIALS AND METHODS: MRE of the lumbar region was performed on seven adults in supine position...
February 15, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29444776/association-between-spectral-characteristics-of-paraspinal-muscles-and-functional-disability-in-patients-with-low-back-pain-a-cohort-study
#5
Shin-Yi Chiou, Ermis Koutsos, Pantelis Georgiou, Paul H Strutton
OBJECTIVES: Characteristics of muscle activity, represented by surface electromyography (EMG), have revealed differences between patients with low back pain (LBP) and healthy adults; how they relate to functional and clinical parameters remains unclear. The purpose of the current study was to examine the correlation between frequency characteristics of EMG (analysed using continuous wavelet transform (CWT) analysis) and patients' self-rated score of disability. DESIGN AND SETTING: This is a case-control study with 15 patients with mechanical LBP without radicular symptoms...
February 14, 2018: BMJ Open
https://www.readbyqxmd.com/read/29433182/extraspinal-interdural-surgical-approach-for-c2-neurinomas-report-of-an-experience-with-50-cases
#6
Atul Goel, Amol Kaswa, Abhidha Shah, Survendra Rai, Sandeep Gore, Pralhad Dharurkar
OBJECTIVE: We report our experience with surgery in 50 patients with C2 neurinomas. The anatomic subtleties of these discrete forms of tumors and their surgical implications are analyzed. METHODS: During the period 2006-2016, we operated on 50 patients with 55 C2 neurinomas. Type A tumors were located within the spinal canal, type B tumors were located in the lateral gutter, and type C tumors had a paraspinal extension. By working within the dural confines of the tumor and appropriately angulating the microscope, the entire tumor bulk extending into 1 or all 3 compartments was resected...
February 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29429888/risk-factors-for-local-recurrence-after-total-en-bloc-spondylectomy-for-metastatic-spinal-tumors-a-retrospective-study
#7
Takashi Igarashi, Hideki Murakami, Satoru Demura, Satoshi Kato, Katsuhito Yoshioka, Noriaki Yokogawa, Hiroyuki Tsuchiya
BACKGROUND: The aim of this study was to evaluate local recurrence and survival outcomes after frozen autograft total en bloc spondylectomy for metastatic spinal tumors. METHODS: We retrospectively analyzed data from 91 patients with metastatic spinal tumors who underwent frozen autograft total en bloc spondylectomy at our institution between May 2010 and April 2015. We assessed the incidence, primary cancer type, and sites of local recurrence. Risk factors for local recurrence were also examined through the statistical analysis of 17 items, including clinico-pathological characteristics, treatment history, and preoperative or surgical complications...
February 8, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29417591/clinically-practical-approach-for-screening-of-low-muscularity-using-electronic-linear-measures-on-computed-tomography-images-in-critically-ill-patients
#8
Egor Avrutin, Lesley L Moisey, Roselyn Zhang, Jenna Khattab, Emma Todd, Tahira Premji, Rosemary Kozar, Daren K Heyland, Marina Mourtzakis
BACKGROUND: Computed tomography (CT) scans performed during routine hospital care offer the opportunity to quantify skeletal muscle and predict mortality and morbidity in intensive care unit (ICU) patients. Existing methods of muscle cross-sectional area (CSA) quantification require specialized software, training, and time commitment that may not be feasible in a clinical setting. In this article, we explore a new screening method to identify patients with low muscle mass. METHODS: We analyzed 145 scans of elderly ICU patients (≥65 years old) using a combination of measures obtained with a digital ruler, commonly found on hospital radiological software...
December 6, 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29407350/in-vivo-study-of-paraspinal-muscle-weakness-using-botulinum-toxin-in-one-primate-model
#9
Sang Kuy Han, Youngjeon Lee, Jung-Joo Hong, Hyeon-Gu Yeo, Jincheol Seo, Chang-Yeop Jeon, Kang-Jin Jeong, Yeung Bae Jin, Philyong Kang, Sangil Lee, Choongsoo S Shin, Young Eun Kim, Keyoung Jin Chun, Kyu-Tae Chang, Sang-Rae Lee
BACKGROUND: It has been generally speculated that paraspinal muscle weakness is related to the spinal degeneration including intervertebral disc failure. The purpose of this study was to investigate the effects of paraspinal muscle weakness induced by the botulinum toxin type-A on the lumbar spine and behavior pattern in an in-vivo primate model which has an upright locomotion similar to that of humans. METHODS: Botox injections into paraspinal muscle of one cynomolgus monkey were conducted biweekly up to 19 weeks at L2-L3, L3-L4 and L4-L5...
January 29, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29406921/paraspinal-muscle-involvement-in-herpes-zoster-induced-abdominal-wall-pseudohernia-revealed-by-electrophysiological-and-radiological-studies
#10
Akihiko Mitsutake, Takuya Sasaki, Takuto Hideyama, Tatsuya Sato, Junko Katsumata, Tomonari Seki, Risa Maekawa, Yasushi Shiio
Segmental zoster paresis is an uncommon complication of herpes zoster, and abdominal wall pseudohernia is rare. Previous reports have emphasized the involvement of anterior rami of spinal nerves, while the involvement of posterior rami has been less frequently reported. We aimed to elucidate the involvement of posterior rami of spinal nerves in abdominal wall pseudohernia. Four patients with a diagnosis of abdominal wall pseudohernia underwent needle electromyography (nEMG) and magnetic resonance imaging (MRI)...
February 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29405872/short-term-effects-of-kinesio-taping%C3%A2-on-electromyographic-characteristics-of-paraspinal-muscles-pain-and-disability-in-patients-with-lumbar-disc-herniation
#11
Marcin Grześkowiak, Zbigniew Krawiecki, Wojciech Łabędź, Jacek Kaczmarczyk, Jacek Lewandowski, Dawid Łochyński
CONTEXT: Kinesio taping® (KT) is a therapeutic modality frequently used in the clinical practice for the treatment of various musculoskeletal disorders. It is often applied in patients with chronic low back pain (CLBP) to decrease pain and improve functional capacity. However, it is not known, whether thoracolumbar fascia Kinesio Taping® (KT) technique can decrease back pain, restore normal activity of paraspinal muscles and improve functional capacity in patients with lumbar disc herniation (LDH)...
February 6, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29401141/abdominal-muscle-density-is-inversely-related-to-adiposity-inflammatory-mediators
#12
Rachel B Van Hollebeke, Mary Cushman, Emma F Schlueter, Matthew A Allison
PURPOSE: Skeletal muscle is the largest regulator of glucose metabolism but few population-based studies have examined the associations between muscle and inflammation. We studied the relationships between abdominal muscle area and density with selected adiposity associated inflammatory mediators. METHODS: Nearly 2,000 subjects underwent computed tomography (CT) of the abdomen and had venous fasting blood drawn concomitantly. The CT scans were interrogated for visceral and subcutaneous fat, as well as abdominal lean muscle areas and densities...
February 2, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29396765/the-evaluation-of-lumbar-paraspinal-muscle-quantity-and-quality-using-the-goutallier-classification-and-lumbar-indentation-value
#13
Koji Tamai, Jessica Chen, Michael Stone, Anush Arakelyan, Permsak Paholpak, Hiroaki Nakamura, Zorica Buser, Jeffrey C Wang
PURPOSE: The cross-sectional area and fat infiltration are accepted as standard parameters for quantitative and qualitative evaluation of muscle degeneration. However, they are time-consuming, which prevents them from being used in a clinical setting. The aim of this study was to analyze the relationship between lumbar muscle degeneration and spinal degenerative disorders, using lumbar indentation value (LIV) as quantitative and Goutallier classification as qualitative measures. METHODS: This is a retrospective analysis of kinematic magnetic resonance images (kMRI)...
February 2, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29395230/effects-of-intervertebral-disc-lesion-and-multifidus-muscle-resection-on-the-structure-of-the-lumbar-intervertebral-discs-and-paraspinal-musculature-of-the-rat
#14
Huub Maas, Wendy Noort, Paul W Hodges, Jaap van Dieën
The aim of this study was to investigate whether elimination of multifidus muscle in rats causes intervertebral disc (IVD) degeneration similar to that found after IVD lesion. Data were obtained from 36 male Wistar rats randomly assigned to one of three groups: (i) IVD lesion, in which the L4/L5 IVD was stabbed; (ii) multifidus muscle resection, in which all multifidus tissue between L3 and L6 was excised bilaterally; (iii) control, in which no intervention was applied. At 7, 14, and 28 days post-intervention, L4/L5 IVDs were harvested for histological analysis; left and right multifidus fascicles between L3 and S1 (from control and IVD lesion animals) and medial longissimus between L1 and S3 (from all animals) were dissected and weighed...
January 12, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29393506/analytical-incorporation-of-fractionation-effects-in-probabilistic-treatment-planning-for-intensity-modulated-proton-therapy
#15
Niklas Wahl, Philipp Hennig, Hans-Peter Wieser, Mark Bangerta
PURPOSE: We show that it is possible to explicitly incorporate fractionation effects into closed-form probabilistic treatment plan analysis and optimization for intensity-modulated proton therapy with analytical probabilistic modeling (APM). We study the impact of different fractionation schemes on the dosimetric uncertainty induced by random and systematic sources of range and setup uncertainty for treatment plans that were optimized with and without consideration of the number of treatment fractions...
February 2, 2018: Medical Physics
https://www.readbyqxmd.com/read/29390372/dynamic-paraspinal-muscle-impingement-causing-acute-hemiplegia-after-c1-posterior-arch-laminectomy-a-case-report
#16
Naoki Notani, Masashi Miyazaki, Toyomi Yoshiiwa, Toshinobu Ishihara, Shozo Kanezaki, Hiroshi Tsumura
RATIONALE: Acute neurological deficits following spinal surgery commonly result from epidural hematoma, surgical trauma, vascular compromise, and graft or hardware impingement, with the cause identified by magnetic resonance imaging (MRI). We present a rare case of dynamic paraspinal muscle impingement after C1 posterior arch laminectomy, which was diagnosed by myelography, with no significant findings on MRI. PATIENT CONCERNS: An 81-year-old, severely obese male, was referred to our department for the treatment of vertebral disease of the lumbar spine...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29388089/intraosseous-pseudomeningocele-of-the-mobile-spine-a-case-report-and-review-of-the-literature
#17
Emily Rider-Longmaid, Junjian Huang, Ronnie Sebro, Harvey Smith
BACKGROUND: Pseudomeningoceles most commonly occur due to prior trauma or surgery and are often located in the posterior paraspinous tissues. Here, we report a case of an intraosseous pseudomeningocele that mimicked an intra-osseous T2 hyperintense lesion in the L1 vertebral body. CASE DESCRIPTION: A 64-year-old male presented with back, left lateral thigh and left knee pain lasting several months. He had no prior history of trauma or surgery. Radiographs of the lumbar spine showed mild levoscoliotic curvature of the lumbar spine, Baastrup's changes between the spinous processes, multilevel degenerative disc disease and facet arthropathy...
January 31, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29383294/hydrodissection-of-wiltse-s-plane-to-facilitate-exposure-during-minimally-invasive-transforaminal-lumbar-interbody-fusion
#18
Zachary Tataryn, Kenan Alkhalili, James T Kryzanski
Traditional posterior lumbar approaches in a transforaminal lumbar interbody fusion (TLIF) require subperiosteal dissection of bilateral paraspinal muscles to provide adequate exposure. This may traumatize the multifidus muscle and its afferent innervations leading to postoperative paraspinal muscle atrophy. Minimizing such intraoperative trauma has been identified as an important factor in the reduction of postoperative lumbar pain. An approach via a blunt dissection through Wiltse's plane, which lies between the longissimus and multifidus muscles, may minimize postoperative pain...
November 23, 2017: Curēus
https://www.readbyqxmd.com/read/29380702/biological-and-genetic-features-of-neuroblastoma-and-their-clinical-importance
#19
Nevim Aygun
Neuroblastoma derived from primitive cells of the sympathetic nervous system typically develops in the adrenal medulla or paraspinal ganglia. Neuroblastoma usually occurs sporadically, but familial cases are also observed. ALK and PHOX2B germline mutations can cause hereditary neuroblastoma, while a common genetic variation in chromosome 6p22 is associated to sporadic neuroblastoma. However, the aetiology of sporadic neuroblastoma is not exactly known. This embryonic malignancy generally represents the second most common solid tumour after central nervous system tumours throughout the world in childhood...
January 28, 2018: Current Pediatric Reviews
https://www.readbyqxmd.com/read/29379999/lumbar-paraspinal-muscle-fat-infiltration-is-independently-associated-with-sex-age-and-inter-vertebral-disc-degeneration-in-symptomatic-patients
#20
Julio Urrutia, Pablo Besa, Daniel Lobos, Mauricio Campos, Cristobal Arrieta, Marcelo Andia, Sergio Uribe
PURPOSE: To determine the association of paraspinal muscles and psoas relative cross-sectional area (RCSA) and fat signal fraction (FSF) with sex, age, and intervertebral disc degeneration (IDD) in symptomatic patients. METHODS: We retrospectively evaluated 80 adult patients with spinal symptoms using T2-weighted magnetic resonance images. We determined RCSA and FSF of the paraspinal muscles (erector spinae and multifidus) and psoas from L1-L2 to L5-S1; we determined IDD using the Pfirrmann classification...
January 29, 2018: Skeletal Radiology
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