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Direct Anterior Approach

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https://www.readbyqxmd.com/read/29050384/stimulating-thought-a-functional-mri-study-of-transcranial-direct-current-stimulation-in-schizophrenia
#1
Natasza D Orlov, Owen O'Daly, Derek K Tracy, Yusuf Daniju, John Hodsoll, Lorena Valdearenas, John Rothwell, Sukhi S Shergill
Individuals with schizophrenia typically suffer a range of cognitive deficits, including prominent deficits in working memory and executive function. These difficulties are strongly predictive of functional outcomes, but there is a paucity of effective therapeutic interventions targeting these deficits. Transcranial direct current stimulation is a novel neuromodulatory technique with emerging evidence of potential pro-cognitive effects; however, there is limited understanding of its mechanism. This was a double-blind randomized sham controlled pilot study of transcranial direct current stimulation on a working memory (n-back) and executive function (Stroop) task in 28 individuals with schizophrenia using functional magnetic resonance imaging...
September 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29048696/the-direct-anterior-minimal-invasive-approach-in-total-hip-replacement-a-prospective-departmental-study-on-the-learning-curve
#2
Ole-Christian L Brun, Lukas Månsson, Lars Nordsletten
INTRODUCTION: Introduction of new surgical techniques is normal, but seldom monitored in real time. The purpose of this study was to monitor the learning curve when introducing a new surgical technique to a department. We did a prospective evaluation of the learning curve when introducing the minimally invasive direct anterior approach in total hip arthroplasty. We wish to investigate whether there is a learning curve for the direct anterior minimal invasive approach in total hip replacement and what are the early complications to this approach...
October 16, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29046469/-a-rare-case-of-ruptured-unruptured-miniature-aneurysms-originating-from-the-infundibular-dilatation-of-the-callosomarginal-artery-branching-from-the-infracallosal-a2-segment-of-the-azygos-anterior-cerebral-artery
#3
Shota Yoshimura, Chika Somagawa, Kei Satoh, Yutaka Fukuda, Takeshi Hiu, Tomonori Ono, Ryujiro Ushijima, Keisuke Toda, Keisuke Tsutsumi
We report the first case of two de novo miniature aneurysms(ruptured/unruptured)emerging from the infundibular dilatation(ID)of the callosomarginal artery, which branches from the infracallosal(A2)segment of the azygos anterior cerebral artery(AACA), in a 36-year-old woman. The patient had previously been diagnosed with a miniature, unruptured aneurysm, occurring in the A2 segment of the AACA, detected by CT angiography(CTA)at another hospital two years ago, and had been followed up with MR angiography(MRA)every 6 months...
October 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29040698/clinical-outcome-after-endoscopic-endonasal-resection-of-tuberculum-sella-meningiomas
#4
Khaled Elshazly, Varun R Kshettry, Christopher J Farrell, Gurston Nyquist, Marc Rosen, James J Evans
BACKGROUND: In select cases, the endoscopic endonasal approach (EEA) has distinct advantages for resection of tuberculum sella meningiomas (TSM). OBJECTIVE: To report the extent of resection (EOR), complication rates, and outcomes in a large series of TSM treated by the EEA. METHODS: Twenty-five consecutive TSM cases treated by EEA from 2008 to 2016 were retrospectively reviewed. Patient history, imaging, volumetric EOR, complications, and outcomes are presented...
October 10, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29038224/effect-of-elective-percutaneous-coronary-intervention-on-hyperemic-absolute-coronary-blood-flow-volume-and-microvascular-resistance
#5
Yoshihisa Kanaji, Tadashi Murai, Taishi Yonetsu, Eisuke Usui, Makoto Araki, Junji Matsuda, Masahiro Hoshino, Masao Yamaguchi, Takayuki Niida, Masahiro Hada, Sadamitsu Ichijyo, Rikuta Hamaya, Yoshinori Kanno, Mitsuaki Isobe, Tsunekazu Kakuta
BACKGROUND: The hemodynamics involved in the relationship between absolute coronary blood flow (ABF) volume and myocardial resistance (MR) are complex, and the effect of percutaneous coronary intervention (PCI) on their changes remains unclear. The aim of this study was to investigate the differences in hyperemic ABF and MR before and after elective PCI using a thermodilution method. METHODS AND RESULTS: We investigated 28 vessels (right coronary artery, 9; left anterior descending coronary artery, 18; left circumflex coronary artery, 1) from 28 patients with stable angina pectoris undergoing elective PCI...
October 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29034792/medical-resource-utilization-and-costs-for-total-hip-arthroplasty-benchmarking-an-anterior-approach-technique-in-the-medicare-population
#6
Atul F Kamath, Abhishek S Chitnis, Chantal Holy, Jason Lerner, Brian Curtin, Steve Lochow, Charles DeCook, Joel M Matta
AIMS: The anterior approach (AA) for total hip arthroplasty (THA) is associated with more rapid recovery when compared to traditional approaches. The purpose of this study was to benchmark healthcare resource utilization and costs for patients with THA via AA relative to matched patients. MATERIALS AND METHODS: We queried Medicare claims data (2012-2014) to identify patients who received THA via an AA from experienced surgeons, and matched these patients to a control cohort (all THA approaches)...
October 15, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/29032422/the-deep-layer-of-the-tractus-iliotibialis-and-its-relevance-when-using-the-direct-anterior-approach-in-total-hip-arthroplasty-a-cadaver-study
#7
David Putzer, Matthias Haselbacher, Romed Hörmann, Günter Klima, Michael Nogler
INTRODUCTION: Surgical approaches through smaller incisions reveal less of the underlying anatomy, and therefore, detailed knowledge of the local anatomy and its variations is important in minimally invasive surgery. The aim of this study was to determine the location, extension, and histomorphology of the deep layer of the iliotibial band during minimally invasive hip surgery using the direct anterior approach (DAA). MATERIALS AND METHODS: The morphology of the iliotibial tract was determined in this cadaver study on 40 hips with reference to the anterior superior iliac spine and the tibia...
October 14, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29027198/shape-analysis-of-spatial-relationships-between-orbito-ocular-and-endocranial-structures-in-modern-humans-and-fossil-hominids
#8
Ana Sofia Pereira-Pedro, Michael Masters, Emiliano Bruner
The orbits and eyes of modern humans are situated directly below the frontal lobes and anterior to the temporal lobes. Contiguity between these orbital and cerebral elements could generate spatial constraints, and potentially lead to deformation of the eye and reduced visual acuity during development. In this shape analysis we evaluate whether and to what extent covariation exists between ocular morphology and the size and spatial position of the frontal and temporal areas in adult modern humans. Magnetic resonance imaging (MRI) was used to investigate patterns of variation among the brain and eyes, while computed tomography (CT) was used to compare cranial morphology in this anatomical region among modern humans, extinct hominids and chimpanzees...
October 13, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29021874/functional-outcome-of-isolated-hoffa-fractures-treated-with-cannulated-cancellous-screw
#9
R Singh, R B Singh, M Mahendra
Introduction: Isolated Hoffa fracture is an infrequent injury and little research has been done on this subject. The purpose of this study was to evaluate the functional outcome and complications of surgically managed Hoffa fractures with cannulated cancellous screw. Materials and Methods: Between 2011 and 2014, eight isolated Hoffa fractures in seven adult patients with mean age 39.8±11.9 years (range 25-60 years) were managed with cannulated cancellous screw of 6.5mm diameter applied in anterior to posterior direction using swashbuckler and medial parapatellar approach for lateral and medial Hoffa fractures respectively...
July 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29017982/clinical-presentation-diagnosis-and-surgical-treatment-of-spontaneous-cervical-intradural-disc-herniations-a-review-of-the-literature
#10
REVIEW
Arunprasad Gunasekaran, Nova Kristine M de Los Reyes, Jerry Walters, Noojan Kazemi
OBJECTIVE: Spontaneous cervical intradural disc herniation (IDH) is a rare occurrence with limited and disparate information available regarding its presentation, diagnosis, and treatment. However, its accurate detection is vital for planning surgical treatment. In this review of the literature, we collected data from all cervical intradural disc herniations described to date. Particular attention is paid to diagnostic findings, surgical approach and causation for cervical IDH, especially at the cervicothoracic junction...
October 7, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29016435/comparison-of-outcomes-for-anterior-cervical-discectomy-and-fusion-with-and-without-anterior-plate-fixation-a-systematic-review-and-meta-analysis
#11
Jeremie D Oliver, Sandy Goncalves, Panagiotis Kerezoudis, Mohammed Ali Alvi, Brett A Freedman, Ahmad Nassr, Mohamad Bydon
STUDY DESIGN: Systematic review and meta-analysis. OBJECTIVE: To compare postoperative surgical, radiographic and patient-reported outcomes following ACDF with and without plate fixation. SUMMARY OF BACKGROUND DATA: Anterior cervical discectomy and fusion (ACDF) has evolved significantly over the years, including the placement of an anterior plate construct. Although promoting bony osseo-integration at the fusion site, there are a number of plate-related complications that can arise...
October 9, 2017: Spine
https://www.readbyqxmd.com/read/28993084/perioperative-fractures-in-cementless-total-hip-arthroplasty-using-the-direct-anterior-minimally-invasive-approach-reduced-risk-with-short-stems
#12
Michael Dietrich, Method Kabelitz, Claudio Dora, Patrick O Zingg
BACKGROUND: The direct minimally invasive anterior approach (DMIAA) and the use of uncemented stems demonstrated an increase in intraoperative fractures in recent literature. Whether the different design of the stems additionally influences the incidence of perioperative local complications, was the goal of this study. METHODS: From January 2008 until June 2010, all patients undergoing primary cementless total hip arthroplasty, using a DMIAA, were consecutively included...
September 19, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28984572/total-hip-arthroplasty-via-the-direct-anterior-approach-with-a-dual-mobility-cup-for-displaced-femoral-neck-fracture-in-patients-with-a-high-risk-of-dislocation
#13
Hironori Ochi, Tomonori Baba, Yasuhiro Homma, Mikio Matsumoto, Taiji Watari, Yu Ozaki, Hideo Kobayashi, Kazuo Kaneko
INTRODUCTION: Although total hip arthroplasty (THA) is superior to bipolar hemiarthroplasty (BHA) for displaced femoral neck fracture in terms of hip pain, function and reoperation rate, THA has a higher rate of dislocation. The direct anterior approach (DAA) and a dual mobility cup (DMC) are associated with lower rates of dislocation. The aim of this study was to investigate the outcomes of THA compared with BHA, and in those patients who had a THA we investigated those with a DMC (DMC-THA) and compared them with those had a single conventional cup (Single cup-THA)...
2017: SICOT-J
https://www.readbyqxmd.com/read/28983222/transoral-approach-for-odontoidectomy-efficacy-and-safety
#14
Ahmed Mohamed Elbadrawi, Tameem Mohamed Elkhateeb
BACKGROUND: Odontoid process pathologies can cause upper motor neuron lesions. These pathologies can be approached through either a high retropharyngeal approach or a transoral approach. The introduction of the surgical microscope, proper instrumentations, and proper antibiotics has increased utilization of the transoral approach. QUESTIONS/PURPOSES: Our approach to anterior odontoid resection through transoral approach for different pathologies resulting in compression the cervical cord or causing craniocervical instability is described here...
October 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28980395/improved-vessel-tissue-contrast-and-image-quality-in-3d-radial-sampling-based-4d-mri
#15
Zixin Deng, Wensha Yang, Jianing Pang, Xiaoming Bi, Richard Tuli, Debiao Li, Zhaoyang Fan
PURPOSE: In radiation treatment planning for thoracic and abdominal tumors, 4D-MRI has shown promise in respiratory motion characterization with improved soft-tissue contrast compared to clinical standard, 4D computed tomography (4D-CT). This study aimed to further improve vessel-tissue contrast and overall image quality in 3D radial sampling-based 4D-MRI using a slab-selective (SS) excitation approach. METHODS: The technique was implemented in a 3D radial sampling with self-gating-based k-space sorting sequence...
October 4, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28973327/estimating-human-trabecular-meshwork-stiffness-by-numerical-modeling-and-advanced-oct-imaging
#16
Ke Wang, Murray A Johnstone, Chen Xin, Shaozhen Song, Steven Padilla, Janice A Vranka, Ted S Acott, Kai Zhou, Stephen A Schwaner, Ruikang K Wang, Todd Sulchek, C Ross Ethier
Purpose: The purpose of this study was to estimate human trabecular meshwork (hTM) stiffness, thought to be elevated in glaucoma, using a novel indirect approach, and to compare results with direct en face atomic force microscopy (AFM) measurements. Methods: Postmortem human eyes were perfused to measure outflow facility and identify high- and low-flow regions (HF, LF) by tracer. Optical coherence tomography (OCT) images were obtained as Schlemm's canal luminal pressure was directly manipulated...
September 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28969413/the-eternal-enigma-in-prostatic-biopsy-access-route
#17
Andrea Fabiani, Emanuele Principi, Alessandra Filosa, Lucilla Servi
Dear Editors,We read with interest the article by Di Franco and co-workers (1). The introduction of prostatic magnetic resonance and the relative fusion-biopsy have not yet allowed the expected improvements in prostate biopsy. To our knowledge, there are no works that demonstrate the superiority of fusion techniques on the remaining ultrasound guided prostate biopsies that are still the widely used in the diagnosis of prostate cancer. Furthemore, these technologies are expensive exams and they are not yet available in all centers, especially in those minors...
October 3, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28968478/the-direct-anterior-approach-does-not-increase-return-to-function-following-hemiarthroplasty-for-femoral-neck-fracture
#18
Victor R Carlson, Alvin C Ong, Fabio R Orozco, Rex W Lutz, Andres F Duque, Zachary D Post
The purpose of this study was to evaluate functional outcomes for hemiarthroplasty using a direct anterior approach or a direct lateral approach for femoral neck fracture. This retrospective review used data collected from a single institution between 2006 and 2016. Eighty-five and 75 consecutive patients who underwent hemiarthroplasty via a direct anterior approach and a direct lateral approach, respectively, met inclusion criteria. All patients with femoral neck fractures were treated by 1 of 2 fellowship-trained orthopedic surgeons using the direct anterior approach or the direct lateral approach to hemiarthroplasty...
October 2, 2017: Orthopedics
https://www.readbyqxmd.com/read/28964045/comparison-of-a-fiber-gel-finite-element-model-of-vocal-fold-vibration-to-a-transversely-isotropic-stiffness-model
#19
Ingo R Titze, Fariborz Alipour, Douglas Blake, Anil Palaparthi
A fiber-gel vocal fold model is compared to a transversely isotropic stiffness model in terms of normal mode vibration. The fiber-gel finite element model (FG-FEM) consists of a series of gel slices, each with a two-dimensional finite element mesh, in a plane transverse to the tissue fibers. The gel slices are coupled with fibers under tension in the anterior-posterior dimension. No vibrational displacement in the fiber-length direction is allowed, resulting in a plane strain state. This is consistent with the assumption of transverse displacement of a simple string, offering a wide range of natural frequencies (well into the kHz region) with variable tension...
September 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28963098/stent-assisted-coiling-of-a-ruptured-vertebrobasilar-junction-aneurysm-via-direct-vertebral-artery-puncture
#20
Tomas Dobrocky, Juergen Beck, Jan Gralla, Pasquale Mordasini
A 78-year-old patient was admitted with subarachnoid hemorrhage caused by rupture of a broad-based vertebrobasilar junction aneurysm. Direct endovascular access to the vertebrobasilar circulation was not possible due to chronic occlusion of the proximal dominant left vertebral artery (VA), hypoplastic right VA and posterior communicating arteries. The distal cervical left VA was reconstituted by muscular branches of the ascending cervical artery. Therefore, endovascular access was gained by direct percutaneous VA puncture guided by a roadmap-controlled anterior approach at the level of C5 proximally to the main reconstituting collateral feeders...
September 27, 2017: BMJ Case Reports
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