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https://www.readbyqxmd.com/read/28087395/lumbar-spinal-muscles-and-spinal-canal-study-by-mri-three-dimensional-reconstruction-in-adult-lumbar-spinal-stenosis
#1
Louis Boissière, Bertrand Moal, Olivier Gille, Elise De-Roquefeuil, Muriel Durieux, Ibrahim Obeid, Vincent Dousset, Jean-Marc Vital, Wafa Skalli
BACKGROUND: Lumbar spinal stenosis is degenerative disc disease most common manifestation. If stenosis degree seems poorly related to symptom severity, lumbar muscles role is recognized. Many studies report imaging methods, to analyze muscle volumes and fat infiltration (FI), but remain limited due to the difficulty to represent entire muscle volume variability. Recently a 3D muscle reconstruction protocol (using the deformation of a parametric specific object method (DPSO) and three point Dixon images) was reported...
January 10, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28078834/magnetic-resonance-imaging-findings-of-patients-with-suspected-tuberculosis-from-a-tertiary-care-centre-in-sri-lanka
#2
A S Pallewatte, N A Wickramasinghe
Introduction: Spinal tuberculosis (TB) is a relatively common cause for spinal pathology in Sri Lanka and a common indication for magnetic resonance imaging (MRI). Objectives: The objective of the study was to describe the MRI imaging pattern of spinal TB in a series of patients. Methods: One hundred and nine patients with clinically confirmed spinal tuberculosis who had undergone MRI scans at the National Hospital of Sri Lanka from 2012-2016 were included in the study...
30, 2016: Ceylon Medical Journal
https://www.readbyqxmd.com/read/28075034/abdominal-lean-muscle-is-associated-with-lower-mortality-among-kidney-waitlist-candidates
#3
Jayme E Locke, J Jeff Carr, Sangeeta Nair, James G Terry, Rhiannon D Reed, Grant D Smith, Dorry L Segev, Vineeta Kumar, Cora E Lewis
Morphometric assessments, such as muscle density and body fat distribution, have emerged as strong predictors of cardiovascular risk and post-operative morbidity and mortality. To date, no study has examined morphometric mortality risk prediction among kidney transplant (KT) candidates. KT candidates, waitlisted 2008-2009 were identified (n=96) and followed to the earliest of transplant, death, or administrative end of study. Morphometric measures, including abdominal adipose tissue, paraspinous and psoas muscle composition, and aortic calcification were measured from CTs...
January 11, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28061014/a-new-definition-of-sarcopenia-in-patients-with-cirrhosis-undergoing-liver-transplantation
#4
Nicolas Golse, Petru Octav Bucur, Oriana Ciacio, Gabriella Pittau, Antonio Sa Cunha, René Adam, Denis Castaing, Teresa Antonini, Audrey Coilly, Didier Samuel, Daniel Cherqui, Eric Vibert
Although sarcopenia is a common complication of cirrhosis, its diagnosis remains nonconsensual: computed tomography (CT) scan determinations vary and no cutoff values have been established in cirrhotic populations undergoing liver transplantation (LT). Our aim was to compare the accuracy of the most widely used measurement techniques and to establish useful cutoffs in the setting of LT. From the 440 patients transplanted between January 2008 and May 2011 in our tertiary center, we selected 256 patients with cirrhosis for whom a recent CT scan was available during the 4 months prior to LT...
November 7, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/28059946/comparative-study-of-the-difference-of-perioperative-complication-and-radiologic-results-mis-dlif-minimally-invasive-direct-lateral-lumbar-interbody-fusion-versus-mis-olif-minimally-invasive-oblique-lateral-lumbar-interbody-fusion
#5
Jie Jin, Kyeong-Sik Ryu, Jung-Woo Hur, Ji-Hoon Seong, Jin-Sung Kim, Hyun-Jin Cho
STUDY DESIGN: Retrospective observatory analysis. OBJECTIVE: The purpose of this study was to compare the incidence of perioperative complication, difference of cage location, and sagittal alignment between minimally invasive oblique lateral lumbar interbody fusion (MIS-OLIF) and MIS-direct lateral lumbar interbody fusion (DLIF) in the cases of single-level surgery at L4-L5. SUMMARY OF BACKGROUND DATA: MIS-DLIF using tubular retractor has been used for the treatment of lumbar degenerative diseases; however, blunt transpsoas dissection poses a risk of injury to the lumbar plexus...
January 4, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28059685/resolution-of-the-more-anteriorly-positioned-psoas-muscle-following-correction-of-spinal-sagittal-alignment-from-spondylolisthesis-case-report
#6
Hasan R Syed, Kurt Yaeger, Faheem A Sandhu
Several studies have described the radiographic, histological, and morphological changes to the paraspinal muscle in patients with chronic low-back pain due to degenerative diseases of the spine. Gross anatomical illustrations have shown that the psoas muscle lies lateral to the L4-5 vertebrae and subsequently thins and dissociates from the vertebral body at L5-S1 in a ventrolateral course. A "rising psoas" may influence the location of the lumbar plexus and result in transient neurological injury on lateral approach to the spine...
January 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28048092/su-g-iep1-10-permeability-evaluation-of-interstitial-cystitis-by-dce-mri-of-the-bladder
#7
D Wu, J Vo, J North, R Towner, R Hurst
PURPOSE: Interstitial cystitis (IC) is a chronic and painful condition that can lead to bladder pain syndrome (BPS) in women. IC and BPS have been known to manifest after physiological changes after giving birth. In this project, we pioneered and advanced a new clinical utility using DCE-MRI to assess bladder permeability. At first IC/BPS perfusion methods were with ratio signal evaluation, we now incorporate pharmacokinetics techniques to allow for further assessment. METHODS: In this pilot study, female patients and volunteers (IC=4, Control=3) underwent imaging with a clinical GE 3T 750W MRI system...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043168/plasma-levels-of-pentraxin-3-in-patients-with-spondyloarthritis
#8
Renato Nisihara, Thelma L Skare, João Otávio Zeni, Henrique Rasera, Karita Lidani, Iara Messias-Reason
CONTEXT: Determining the disease's inflammatory activity in Spondyloarthritis (SpA) is difficult although very important as it is this that drives treatment. OBJECTIVE: To investigate if plasma PTX3 (Pentraxine-3) could act as an inflammatory marker in SpA. METHODS: Eighty one SpA patients (11 with psoriatic arthritis or PsoA and 70 with Ankylosing Spondylitis or AS) and 90 gender and age paired controls were studied for plasma PTX3 levels by ELISA...
January 3, 2017: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/28028799/residual-force-enhancement-is-regulated-by-titin-in-skeletal-and-cardiac-myofibrils
#9
Nabil Shalabi, Anabelle Cornachione, Felipe Leite, Srikar Vengallatore, Dilson E Rassier
When a skeletal muscle contracts isometrically, the muscle produces a force relative to the final isometric sarcomere length (SL). However, when the same final SL is reached by stretching the muscle while it contracts, the muscle produces a relatively higher force: a phenomenon commonly referred to as residual force enhancement. In this study, we investigated residual force enhancement in rabbit skeletal psoas myofibrils and, for the first time, cardiac papillary myofibrils. A custom-built atomic force microscope was used in experiments that stretched myofibrils before and after inhibiting myosin and actin interactions to determine whether the different cardiac and skeletal titin isoforms regulate residual force enhancement...
December 27, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/28027770/contrast-enhanced-renal-mr-angiography-at-7-tesla-how-much-gadolinium-do-we-need
#10
Karsten Beiderwellen, Oliver Kraff, Anja Laader, Stefan Maderwald, Stephan Orzada, Mark E Ladd, Michael Forsting, Thomas C Lauenstein, Lale Umutlu
OBJECTIVES: To investigate whether a dose reduction of Gadobutrol for renal magnetic resonance angiography (MRA) at 7 Tesla (T) is feasible while preserving diagnostic image quality. METHODS: Ten healthy volunteers were enrolled for a renal MRA on a 7T scanner. Fast low angle shot (FLASH) MRA data sets were obtained utilizing three different doses of Gadobutrol (0.1, 0.05 and 0.025mmol/kg body weight [BW]). Contrast ratios (CR) were measured in the aorta as well as in the intra- and extraparenchymal arteries compared to the psoas muscle...
January 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28019060/development-of-a-simple-predictive-model-for-decreased-skeletal-muscle-mass-in-patients-with-compensated-chronic-liver-disease
#11
Hiroki Nishikawa, Hirayuki Enomoto, Akio Ishii, Yoshinori Iwata, Yuho Miyamoto, Noriko Ishii, Yukihisa Yuri, Ryo Takata, Kunihiro Hasegawa, Chikage Nakano, Takashi Nishimura, Yoh Kazunori, Nobuhiro Aizawa, Yoshiyuki Sakai, Naoto Ikeda, Tomoyuki Takashima, Hiroko Iijima, Shuhei Nishiguchi
AIMS: To develop and validate a simple predictive model using easily obtained clinical parameters to predict decreased skeletal muscle mass (DSMM) in chronic liver disease (CLD) patients (n = 652). METHODS: Study subjects were divided into a training set (n = 326) and a validation set (n = 326). DSMM was diagnosed based on skeletal muscle mass index measured by bioimpedance analysis. Variables significantly associated with DSMM were identified using univariate and multivariate analyses in the training set and used to construct a predictive formula...
December 26, 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28011890/idiopathic-myelofibrosis-with-disseminated-hepatosplenic-mesenteric-renal-and-pulmonary-extramedullary-haematopoeisis-portal-hypertension-and-tuberculosis-initial-presentation-and-2%C3%A2-years-follow-up
#12
Ananya Panda, Sheragaru Hanumanthappa Chandrashekhara, Aruna Nambirajan, Pravas Mishra
A 35-year-old man with a 12-year history of idiopathic myelofibrosis (IMF) presented in 2014 with fatigue and abdominal distension. CT scan revealed massive hepatosplenomegaly with focal splenic lesions, soft tissue around renal pelvis, mesenteric masses compressing bowel loops and perilymphatic nodules in lungs. There was portal hypertension, ascites, pleural effusion, bilateral psoas abscesses and necrotic retroperitoneal lymphadenopathy. MRI additionally revealed hypointense periportal infiltrative lesions in liver, not seen on CT scan...
December 23, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27994782/non-caseating-granulomatous-infective-spondylitis-melioidotic-spondylitis
#13
Justin Arockiaraj, Rajiv Karthik, Veena Jeyaraj, Rohit Amritanand, Venkatesh Krishnan, Kenny Samuel David, Gabriel David Sundararaj
STUDY DESIGN: Retrospective clinical analysis. PURPOSE: To delineate the clinical presentation of melioidosis in the spine and to create awareness among healthcare professionals, particularly spine surgeons, regarding the diagnosis and treatment of melioidotic spondylitis. OVERVIEW OF LITERATURE: Melioidosis is an emerging disease, particularly in developing countries, associated with a high mortality rate. Its causative pathogen, Burkholderia pseudomallei, has been labeled as a bio-terrorism agent...
December 2016: Asian Spine Journal
https://www.readbyqxmd.com/read/27994045/effects-of-activation-on-the-elastic-properties-of-intact-soleus-muscles-with-a-deletion-in-titin
#14
Jenna A Monroy, Krysta L Powers, Cinnamon M Pace, Theodore Uyeno, Kiisa C Nishikawa
Titin has long been known to contribute to muscle passive tension. Recently, it was also demonstrated that titin-based stiffness increases upon Ca(2+)-activation of wildtype mouse psoas myofibrils stretched beyond overlap of the thick and thin filaments. In addition, this increase in titin-based stiffness upon activation was impaired in single psoas myofibrils from mdm mice with a deletion in titin. Here, we investigate the effects of muscle activation on elastic properties of intact soleus muscles from wildtype and mdm mice to determine whether titin may contribute to active muscle stiffness...
December 19, 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/27988516/laparoscopic-extravesical-submucosal-tunneling-ureteroneocystostomy-combined-with-psoas-hitch-for-medium-length-distal-ureteral-defects-in-adults
#15
Huijie Gong, Yiqin Lu, Yongji Yan, Zhenqi Wu, Wenfeng Gao, Haisheng Cheng, Yabing Wu, Yanfeng Li, Xuetao Ma, Jingbo Liu, Linfeng Dai
OBJECTIVE: This study aims to describe the technique and feasibility of laparoscopic submucosal tunneling ureteroneocystostomy in combination with psoas hitch to restore urinary tract continuity in patients showing medium-length distal ureteral defects. MATERIALS AND METHODS: From January 2012 to April 2016, a total of 13 patients (4 males and 9 females) with a mean age of 37 years were performed with the laparoscopic operation of ureteral submucosal tunneling reimplantation combined with psoas hitch...
December 17, 2016: Urologia Internationalis
https://www.readbyqxmd.com/read/27979468/sarcopenia-in-emergency-abdominal-surgery
#16
Rebecca C Dirks, Brandy L Edwards, Elizabeth Tong, Basil Schaheen, Florence E Turrentine, Amber Shada, Philip W Smith
BACKGROUND: Sarcopenia, a loss of skeletal muscle mass associated with aging, is a practical measure of frailty and has been previously identified as a predictor of outcomes in surgical cohorts including cancer resection and elderly patients. We hypothesized that sarcopenia, as measured by preoperative computerized tomography (CT) scan, predicts mortality and morbidity in emergent laparotomy. METHODS: Institutional American College of Surgeons National Surgical Quality Improvement Program data were queried for adult patients who underwent open emergency abdominal surgery between 2008 and 2013...
January 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/27938929/surgical-management-of-psoas-abscess-in-the-human-immunodeficiency-virus-era
#17
Raza Aboobakar, Shalen Cheddie, Bhugwan Singh
OBJECTIVES: Thai aims of this study were to provide an epidemiological and microbiological analysis of psoas abscess in the human immunodeficiency virus (HIV)-infected population, and to describe the optimal investigative and management approach of this condition. METHODS: A retrospective chart analysis of 20 patients with a diagnosis of psoas abscess admitted to a regional academic hospital from January 2012 to December 2014 was performed. RESULTS: Twenty patients with psoas abscess were identified, of which 14 were HIV positive (70%) and five HIV negative (25%)...
December 7, 2016: Asian Journal of Surgery
https://www.readbyqxmd.com/read/27932030/a-clinically-applicable-muscular-index-predicts-long-term-survival-in-resectable-pancreatic-cancer
#18
Daniel Delitto, Sarah M Judge, Thomas J George, George A Sarosi, Ryan M Thomas, Kevin E Behrns, Steven J Hughes, Andrew R Judge, Jose G Trevino
BACKGROUND: The relationship between myopenia, nutritional status, and long-term oncologic outcomes remains poorly characterized in patients with clinically resectable pancreatic cancer. We sought to reliably quantify prognostic indicators of preoperative cachexia in a manner applicable to any clinical setting. METHODS: Preoperative computed tomographies were available electronically and suitable for analysis in 73 of 82 consecutive patients with pancreatic cancer undergoing pancreatoduodenectomy between November 2010 and February 2014...
December 5, 2016: Surgery
https://www.readbyqxmd.com/read/27931723/psoas-muscle-area-as-a-predictor-of-outcomes-in-transcatheter-aortic-valve-implantation
#19
Lohit Garg, Sahil Agrawal, Timothy Pew, George S Hanzel, Amr E Abbas, Michael J Gallagher, Francis L Shannon, Ivan D Hanson
Frailty is a powerful predictor of outcomes after transcatheter aortic valve implantation (TAVI). Sarcopenia as assessed by psoas muscle area (PMA) is a validated tool to assess frailty before surgical procedures. We evaluated PMA as a predictor of outcomes after TAVI in 152 consecutive patients who underwent this procedure at our institution from 2011 to 2014. Preoperative computed tomography scans were used to measure PMA, which then was indexed to body surface area. Outcomes evaluated included (1) early poor outcome (30 days mortality, stroke, dialysis, and prolonged ventilation), (2) 1-year mortality, and (3) high-resource utilization (length of stay >7 days, discharge to rehabilitation, or readmission within 30 days)...
February 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/27927616/safety-of-hip-anchor-insertion-from-the-midanterior-and-distal-anterolateral-portals-with-a-straight-drill-guide-a-cadaveric-study
#20
Ryan M Degen, Lazaros Poultsides, Stephanie W Mayer, Angela E Li, Struan H Coleman, Anil S Ranawat, Danyal H Nawabi, Bryan T Kelly
BACKGROUND: During arthroscopic labral refixation, suture anchors are typically inserted from either the midanterior (MA) portal or the distal anterolateral (DALA) portal; however, no studies have previously compared these techniques. PURPOSE/HYPOTHESIS: The purpose of this study was to compare acetabular rim accessibility and associated complication rates of anchor insertion from these portals. We hypothesized that rim access would be better from the DALA portal...
December 7, 2016: American Journal of Sports Medicine
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