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Direct Anterior Approach

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https://www.readbyqxmd.com/read/28532911/lateral-transpsoas-approach-to-the-lumbar-spine-and-relationship-of-the-ureter-anatomical-study-with-application-to-minimizing-complications
#1
Vlad Voin, Christina Kirkpatrick, Fernando Alonso, Tarush Rastugi, Filipe H Sanders, Doniel Drazin, Rod J Oskouian, R Shane Tubbs
INTRODUCTION: Complications from lateral lumbar interbody fusion procedures range from neurological deficits to organs and blood vessel to injuries. Injury to the ureter has been reported though uncommon. The present study was performed to elucidate the anatomical relationship of the ureter to this surgical approach. METHODS: Eight adult cadavers (16 sides) were placed in the full lateral position and the distal ureter cannulated with a metal wire, which was passed up to the kidney...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28529013/bipolar-fresh-total-osteochondral-allograft-in-the-ankle-is-it-a-successful-long-term-solution
#2
S Giannini, A Mazzotti, F Vannini
INTRODUCTION: Severe post-traumatic ankle arthritis poses a reconstructive challenge in young and active patients. Although technically demanding and despite unsolved immunological issues, bipolar fresh total osteochondral allograft (BFTOA) represent an intriguing option to arthrodesis and prosthetic replacement. The purpose of this paper is to evaluate the outcomes of a series of 48 ankle BFTOA at 10 years follow up and to investigate the rate of survival long term. METHODS: 58 patients underwent BFTOA, of these 48 were available for follow up...
May 11, 2017: Injury
https://www.readbyqxmd.com/read/28523362/transoral-endoscopic-thyroidectomy-our-initial-experience-using-a-new-endoscopic-technique
#3
Jun-Ook Park, Dong-Il Sun
BACKGROUND: A transoral approach has been experimentally introduced to the field of thyroid surgery and several groups in Asia have recently used the technique to treat patients. We performed transoral endoscopic thyroidectomies on patients with thyroid cancer or a benign tumor. METHODS: We reviewed the medical records of patients who underwent transoral endoscopic thyroid surgery between July 2016 and January 2017. A midline incision was made in the vestibule, and a 10 mm cannula was placed; then, the working space was widened by insufflating CO2 at a pressure of 5-6 mmHg...
May 18, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28516043/quantification-of-regional-deformation-of-the-lungs-by-non-rigid-registration-of-three-dimensional-contrast-enhanced-magnetic-resonance-imaging
#4
Jiaxin Shao, Peng Hu
BACKGROUND: Assessment of lung function is vital for the diagnosis of a variety of pathological conditions. Research has been proposed to study pulmonary mechanics and kinematics using two-dimensional (2D) magnetic resonance imaging (MRI). This allows estimation of regional lung tissue mechanics but is limited to 2D information. An approach based on three-dimensional (3D) contrast-enhanced MR angiogram of pulmonary blood vessels and a non-rigid image registration technique is proposed for quantification of lung regional deformations, which can potentially be used for assessment of pulmonary parenchymal mechanics and regional ventilation for disease diagnosis without ionizing radiation...
April 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28511947/intraoperative-femur-fracture-risk-during-primary-direct-anterior-approach-cementless-total-hip-arthroplasty-with-and-without-a-fracture-table
#5
Eric M Cohen, Joshua J Vaughn, Scott A Ritterman, Daniel L Eisenson, Lee E Rubin
BACKGROUND: There is no study to date comparing intraoperative femur fractures (IFFs) in the direct anterior approach (DAA) with and without a fracture table. We hypothesize that there is no significant difference in the IFF with and without a fracture table when performed by experienced DAA hip surgeons. METHODS: This study is a 1-year retrospective review of patients who underwent DAA total hip arthroplasty by 2 surgeons: one surgeon uses a flat table and manually elevates the femur with a large bone hook, while the other surgeon uses a fracture table and a mechanical femoral elevator...
April 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28510377/retrospective-study-of-the-survival-and-patient-satisfaction-with-composite-dahl-restorations-in-the-management-of-localised-anterior-tooth-wear
#6
Ayman Aljawad, Jeremy Simon Rees
OBJECTIVE: This retrospective study was undertaken to evaluate the clinical performance of direct composite restorations placed at an increased vertical dimension to manage localised anterior tooth wear using the Dahl approach. SUBJECTS AND METHODS: Two hundred and ninety six restorations were placed at an increased OVD in 41 subjects with localized anterior Tooth Surface Loss (TSL) were included. Survival analysis was carried out at three levels, major failure only, minor failure only and all types of failure...
December 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28509824/implant-survival-after-minimally-invasive-anterior-or-anterolateral-vs-conventional-posterior-or-direct-lateral-approach-an-analysis-of-21-860-total-hip-arthroplasties-from-the-norwegian-arthroplasty-register-2008-to-2013
#7
Knut Erik Mjaaland, Svein Svenningsen, Anne Marie Fenstad, Leif I Havelin, Ove Furnes, Lars Nordsletten
BACKGROUND: Since 2008, there has been an increase in the use of minimally invasive surgery (MIS) through an anterior or anterolateral approach for total hip arthroplasty (THA) in Norway. We compared the MIS approaches with the conventional posterior and direct lateral approaches in terms of revision rates and risk of revision. METHODS: On the basis of data in the Norwegian Arthroplasty Register, 21,860 THAs with an uncemented stem, performed between 2008 and 2013, were identified and included in the cohort...
May 17, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28508144/radical-lymph-node-dissection-along-the-proximal-splenic-artery-during-laparoscopic-gastrectomy-for-gastric-cancer-using-the-left-lateral-approach
#8
Shingo Kanaji, Satoshi Suzuki, Masashi Yamamoto, Yoshiko Matsuda, Kimihiro Yamashita, Takeru Matsuda, Taro Oshikiri, Tetsu Nakamura, Yasuo Sumi, Yoshihiro Kakeji
BACKGROUND: Recent technical improvements allow safe laparoscopic lymph node dissection (LND) in gastric cancer.1 (,) 2 In suprapancreatic LND, careful LND around the celiac artery (CA) is essential. From a patient's right side, deep LND is performed around the right side of the CA after dissecting around the common hepatic artery (CHA). For LND around the left side of the CA on the same operative axis as the right side, we developed a new procedure for LND along the proximal splenic artery (SA), performed from the patient's left side...
May 15, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28504985/current-opinion-in-otolaryngology-and-head-and-neck-surgery-frontal-sinus-fractures
#9
Robert J Chouake, Brett A Miles
PURPOSE OF REVIEW: The purpose of this manuscript is to review the current literature regarding the management of frontal sinus fractures and offer the authors opinion on the current management of these traumatic injuries. We evaluate recently proposed management algorithms as well as novel surgical approaches reported within the last few years. RECENT FINDINGS: Patient selection for sinus sparing treatment modalities is balanced between fracture severity, involved structures, and reliable patient surveillance...
May 12, 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/28503804/neural-correlates-of-visuomotor-adjustments-during-scaling-of-human-finger-movements-fmri-during-visuomotor-scaling-of-finger-movements
#10
Johannes Brand, Lars Michels, Romy Bakker, Marie-Claude Hepp-Reymond, Daniel Kiper, Manfred Morari, Kynan Eng
Visually guided finger movements include online feedback of current effector position to guide target approach. This visual feedback may be scaled or otherwise distorted by unpredictable perturbations. Although adjustments to visual feedback scaling have been studied before, the underlying brain activation differences between upscaling (visual feedback larger than real movement) and downscaling (feedback smaller than real movement) are currently unknown. Brain activation differences between upscaling and downscaling might be expected because within-trial adjustments during upscaling require corrective backwards accelerations, whereas correcting for downscaling requires forward accelerations...
May 15, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28502688/evaluating-outcomes-of-stand-alone-anterior-lumbar-interbody-fusion-a-systematic-review
#11
Gloria Giang, Ralph Mobbs, Steven Phan, Tommy Manh Tran, Kevin Phan
BACKGROUND: Stand-alone anterior lumbar interbody fusion (ALIF) is an effective surgical approach for selected spinal pathologies. It avoids the morbidity and complications associated with instrumented ALIF such as plate fixation and the traditionally used posterior approach. Despite improved disc space visualisation and clearance, the associated posterior instability and increased risk of non-fusion present major challenges to this approach. The integral cage design aims to address these challenges by providing the necessary stabilisation through intracorporeal screws...
May 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28502359/pearls-and-pitfalls-for-a-surgeon-new-to-ankle-replacements
#12
REVIEW
Federico Giuseppe Usuelli, Camilla Maccario
The role of the surgeon learning curve in total ankle replacement (TAR) has produced contradictory results. It is important for a new surgeon to know what clinical and radiological parameters are considered reliable and ideal. It is clear that exposure to a high-volume center will increase the reliability of a new surgeon approaching TAR. Implant choice may be influenced by surgeon training, and the debate of mobile versus fix-bearing prosthesis is still open. Anterior versus lateral approach is still an open debate, with any hypothetical advantages given by the direct vision on the center of rotation to be proven...
June 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/28499849/a-geometrically-adjustable-receive-array-for-imaging-marmoset-cohorts
#13
Kyle M Gilbert, Joseph S Gati, L Martyn Klassen, Peter Zeman, David J Schaeffer, Stefan Everling, Ravi S Menon
The common marmoset (Callithrix jacchus) is an increasingly popular animal model for translational neuroscience studies, during which anatomical and functional MRI can be useful investigative tools. To attain the requisite SNR for high-resolution acquisitions, the radiofrequency coil must be optimized for the marmoset; however, relatively few custom coils have been developed that maximize SNR and are compatible with accelerated acquisitions. For the study of large populations of animals, the heterogeneity in animal size reduces the effectiveness of a "one size fits all" approach to coil sizing and makes coils tailored to individual animals cost and time prohibitive...
May 10, 2017: NeuroImage
https://www.readbyqxmd.com/read/28499624/acetabular-placement-accuracy-with-the-direct-anterior-approach-freehand-technique
#14
Melissa C Soderquist, Ryan Scully, Anthony S Unger
BACKGROUND: Acetabular cup placement in total hip arthroplasty (THA) has been recognized as an important factor in operative success, and accurate cup placement has been the impetus for novel medical technologies. METHODS: This article examines the cup placement in 955 THAs using a freehand Direct Anterior Approach on a standard operating table. Acetabular anteversion and inclination were determined using the circle theorem. Measurements were divided into safe zone placement determined by Callanan et al as 5°-25° for anteversion and 30°-45° for inclination, as well as by Lewinnek et al as 5°-25° for anteversion and 30°-50° for inclination...
April 18, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28494616/breakdown-of-thalamo-cortical-connectivity-precedes-spike-generation-in-focal-epilepsies
#15
Vitalie Chiosa, Stanislav Alexandru Groppa, Dimitru Ciolac, Nabin Koirala, Liuda Misina, Yaroslav Winter, Maria Moldovanu, Muthuraman Muthuraman, Sergiu Groppa
EEG spikes and focal epileptic seizures are generated in circumscribed cerebral networks that have been insufficiently described. For precise time and spatial domain networks characterization we applied in patients with focal epilepsy dense array 256-channel EEG recordings with causal connectivity estimation using time resolved partial directed coherence and 3T-MRI derived cortical and thalamus integrity reconstruction. Prior to spike generation significant theta and alpha bands driven information flows alterations were noted from both temporal and frontal lobes to thalamus and from thalamus to the frontal lobe...
May 11, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/28479457/primary-endovascular-repair-of-ilio-caval-injury-encountered-during-anterior-exposure-spine-surgery-evolution-of-the-paradigm
#16
Patrick Bonasso, Brandon P Lucke-Wold, Alex d' Audiffret, Lakshmikumar Pillai
OBJECTIVE: Rates of major venous injury are now being reported at between 1-15%. Risk factors for injury include previous spine surgery, level of exposure, and number of retractors used. To review and describe the evolution of our use of stent grafts for repair of life-threatening ilio-caval injuries encountered during anterior exposure Lumbosacral (L-S) spine surgery- from rescue utilization after failed direct repair to preferred modality using occlusion balloons and covered stents akin to the modern management of the ruptured AAA with EVAR...
May 4, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28476459/cervical-spondylotic-myelopathy-national-trends-in-the-treatment-and-peri-operative-outcomes-over-10years
#17
Peter G Passias, Bryan J Marascalchi, Anthony J Boniello, Sun Yang, Kristina Bianco, Cyrus M Jalai, Nancy J Worley, Samantha R Horn, Virginie Lafage, John A Bendo
BACKGROUND: Recent studies show increases in cervical spine surgery prevalence and cervical spondylotic myelopathy (CSM) diagnoses in the US. However, few studies have examined outcomes for CSM surgical management, particularly on a nationwide scale. OBJECTIVE: Evaluate national trends from 2001 to 2010 for CSM patient surgical approach, postoperative outcomes, and hospital characteristics. METHODS: A retrospective nationwide database analysis provided by the Nationwide Inpatient Sample (NIS) including CSM patients aged 25+ who underwent anterior and/or posterior cervical fusion or laminoplasty from 2001 to 2010...
May 2, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28468923/three-dimensional-midwater-camouflage-from-a-novel-two-component-photonic-structure-in-hatchetfish-skin
#18
Eric I Rosenthal, Amanda L Holt, Alison M Sweeney
The largest habitat by volume on Earth is the oceanic midwater, which is also one of the least understood in terms of animal ecology. The organisms here exhibit a spectacular array of optical adaptations for living in a visual void that have only barely begun to be described. We describe a complex pattern of broadband scattering from the skin of Argyropelecus sp., a hatchetfish found in the mesopelagic zone of the world's oceans. Hatchetfish skin superficially resembles the unpolished side of aluminium foil, but on closer inspection contains a complex composite array of subwavelength-scale dielectric structures...
May 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28464688/variability-in-muscle-activation-of-simple-speech-motions-a-biomechanical-modeling-approach
#19
Negar M Harandi, Jonghye Woo, Maureen Stone, Rafeef Abugharbieh, Sidney Fels
Biomechanical models of the oropharynx facilitate the study of speech function by providing information that cannot be directly derived from imaging data, such as internal muscle forces and muscle activation patterns. Such models, when constructed and simulated based on anatomy and motion captured from individual speakers, enable the exploration of inter-subject variability of speech biomechanics. These models also allow one to answer questions, such as whether speakers produce similar sounds using essentially the same motor patterns with subtle differences, or vastly different motor equivalent patterns...
April 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28459804/transplantation-of-hgf-gene-engineered-skeletal-myoblasts-improve-infarction-recovery-in-a-rat-myocardial-ischemia-model
#20
Shu-Ling Rong, Xiao-Lin Wang, Cui-Ying Zhang, Zhuo-Hui Song, Lu-Hua Cui, Xiao-Feng He, Xu-Jiong Li, Hui-Jin Du, Bao Li
BACKGROUND: Skeletal myoblast transplantation seems a promising approach for the repair of myocardial infarction (MI). However, the low engraftment efficacy and impaired angiogenic ability limit the clinical efficiency of the myoblasts. Gene engineering with angiogenic growth factors promotes angiogenesis and enhances engraftment of transplanted skeletal myoblasts, leading to improved infarction recovery in myocardial ischemia. The present study evaluated the therapeutic effects of hepatocyte growth factor (HGF) gene-engineered skeletal myoblasts on tissue regeneration and restoration of heart function in a rat MI model...
2017: PloS One
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