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Direct Anterior Approach

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https://www.readbyqxmd.com/read/28444633/distributed-representations-of-action-sequences-in-anterior-cingulate-cortex-a-recurrent-neural-network-approach
#1
Danesh Shahnazian, Clay B Holroyd
Anterior cingulate cortex (ACC) has been the subject of intense debate over the past 2 decades, but its specific computational function remains controversial. Here we present a simple computational model of ACC that incorporates distributed representations across a network of interconnected processing units. Based on the proposal that ACC is concerned with the execution of extended, goal-directed action sequences, we trained a recurrent neural network to predict each successive step of several sequences associated with multiple tasks...
April 25, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28443189/intraoperative-dislocation-of-the-trial-bipolar-cup-into-the-pelvis-during-bipolar-hip-arthroplasty-a-case-report
#2
Takahito Miyake, Akio Kanda, Itaru Morohashi, Osamu Obayashi, Atsuhiko Mogami, Kazuo Kaneko
INTRODUCTION: Bipolar hip arthroplasty is a good option for treating femoral neck fractures, although some contraindications have been indicated. We report a case of intraoperative dislocation of the trial bipolar cup into the pelvis during bipolar hip arthroplasty. CASE PRESENTATION: A 74-year-old woman underwent bipolar hip arthroplasty for a femoral neck fracture (AO31-B2). She was placed in a lateral decubitus position, and a direct lateral approach was used...
June 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28443175/the-versatile-approach-a-novel-single-incision-combined-with-anterior-and-posterior-approaches-for-decompression-and-instrumented-fusion-to-treat-tuberculosis-of-the-thoracic-spine
#3
Sudhir Kumar Srivastava, Rishi Anil Aggarwal, Sunil Krishna Bhosale, Kunal Roy, Pradip Sharad Nemade
STUDY DESIGN: Retrospective case series. PURPOSE: To describe a novel single incision that combines anterior and posterior approaches for decompression and instrumented fusion to treat tuberculosis of the thoracic spine and study the neurological and radiological outcomes. OVERVIEW OF LITERATURE: Tuberculosis of the spine remains a major health issue in many developing countries. The options for treating tuberculosis of the thoracic spine include the anterior, posterior, and combined approaches, each with its advantages and disadvantages...
April 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28440704/effect-of-femoral-head-size-and-surgical-approach-on-risk-of-revision-for-dislocation-after-total-hip-arthroplasty
#4
Wierd P Zijlstra, Bas De Hartog, Liza N Van Steenbergen, B Willem Scheurs, Rob G H H Nelissen
Background and purpose - Recurrent dislocation is the commonest cause of early revision of a total hip arthropasty (THA). We examined the effect of femoral head size and surgical approach on revision rate for dislocation, and for other reasons, after total hip arthroplasty (THA). Patients and methods - We analyzed data on 166,231 primary THAs and 3,754 subsequent revision THAs performed between 2007 and 2015, registered in the Dutch Arthroplasty Register (LROI). Revision rate for dislocation, and for all other causes, were calculated by competing-risk analysis at 6-year follow-up...
April 25, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28439629/transitioning-to-the-direct-anterior-approach-in-total-hip-arthroplasty-is-it-a-true-muscle-sparing-approach-when-performed-by-a-low-volume-hip-replacement-surgeon
#5
Dan-Viorel Nistor, Sergiu Caterev, Sorana-Daniela Bolboacă, Dan Cosma, Dan Osvald Gheorghe Lucaciu, Adrian Todor
PURPOSE: We conducted this study to establish if the transition from a lateral approach (LA) to the direct anterior approach (DAA) for a low volume hip arthroplasty surgeon during the steep learning curve can be performed maintaining the muscle sparing approach of the DAA without increasing the complication rates. METHODS: In this controlled, prospective, randomized clinical study we investigated 70 patients (35 DAA, 35 LA) with similar demographics that underwent a total hip arthroplasty...
April 24, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28438452/muscle-damage-after-total-hip-arthroplasty-through-the-direct-anterior-approach-for-developmental-dysplasia-of-the-hip
#6
Masashi Kawasaki, Yukiharu Hasegawa, Toshiaki Okura, Satoshi Ochiai, Takayoshi Fujibayashi
BACKGROUND: Total hip arthroplasty (THA) through the direct anterior approach (DAA) is known to cause less muscle damage than other surgical approaches. However, more complex primary cases, such as developmental dysplasia of the hip (DDH), might often cause muscle damage. The objective of the present study was to clarify the muscle damage observed 1 year after THA through the DAA for DDH using magnetic resonance imaging. METHODS: We prospectively compared the muscle cross-sectional area (M-CSA) and fatty atrophy (FA) in muscles by magnetic resonance imaging and the Harris hip score before and at 1-year follow-up after THA through the DAA in 3 groups: 37 patients with Crowe group 1 DDH (D1), 13 patients with Crowe group 2 and 3 DDH (D2 + 3), and 12 patients with osteonecrosis as a control...
March 27, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28430736/vertical-lifting-a-new-optimal-thread-lifting-technique-for-asians
#7
Seung Hoon Kang, Eun Jung Byun, Hei Sung Kim
BACKGROUND: With the evolution of facial rejuvenation methods, thread lifts have gained popularity among patients who seek cosmetic improvement. Absorbable wedge-shaped polydioxanone (PDO) sutures are currently available, and they are extremely popular in the aesthetic clinics in Korea. In case of midface and mandibular jowl lift, threads are most often inserted in an oblique manner with vectors of rejuvenation directed toward the temple. However, specific characteristics of skeletal anatomy should be considered when deciding which technique to use in Asians...
April 19, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28427001/emergency-room-thoracotomy-for-acute-traumatic-cardiac-tamponade-caused-by-a-blunt-cardiac-injury-a-case-report
#8
Kenichiro Ishida, Yoshihiro Kinoshita, Nobutaka Iwasa, Masaro Nakae, Masayuki Sakaki, Yohei Ieki, Kyosuke Takahashi, Yumiko Shimahara, Taku Sogabe, Keiichiro Shimono, Mitsuhiro Noborio, Daikai Sadamitsu
INTRODUCTION: Traumatic blunt cardiac injuries have a high mortality rate, and prompt diagnosis and treatment can be lifesaving in cardiac tamponade. PRESENTATION OF CASE: A 62-year-old man was transferred to the emergency department after a motor vehicle accident. He was hemodynamically unstable. A focused assessment with sonography in trauma (FAST) showed pericardial fluid with right ventricular collapse consistent with cardiac tamponade in the subxiphoid view...
April 5, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28416828/-application-of-bilateral-direct-anterior-approach-total-hip-arthroplasty-a-report-of-22-cases
#9
J Tang, M Lv, Y X Zhou, J Zhang
OBJECTIVE: To analyze the operation technique and the methods to avoid early complications on the learning curve for bilateral direct anterior approach (DAA) total hip arthroplasty (THA). METHODS: We retrospectively studied a series of continued cases with bilateral avascular necrosis of the femoral head (AVN) or degenerative dysplastic hip and rheumatoid arthritis that were treated by DAA THA in Beijing Jishuitan Hospital. A total of 22 patients with 44 hips were analyzed from June 2014 to August 2016 in this study...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28416827/-comparison-of-the-effects-of-total-hip-arthroplasty-via-direct-anterior-approach-and-posterolateral-piriformis-sparing-approach
#10
J Xu, W D Zhuang, X W Li, G Y Yu, Y Lin, F Q Luo, Y H Xiao
OBJECTIVE: To compare the clinical effects of direct anterior approach (DAA) and posterolateral piriformis-sparing approach (Mis-PLA) for minimally invasive surgery of total hip arthroplasty. METHODS: The patients who had total hip arthroplasty from March 2015 to February 2016 were randomly divided into 2 groups: DAA group and Mis-PLA group. In the study, 43 patients (45 hips) were performed with total hip replacement via the direct anterior approach (DAA group)...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28416826/-surgical-technique-and-early-clinical-outcomes-of-direct-anterior-approach-to-total-hip-arthroplasty
#11
M Lv, J Q Zhang, X S Wang, Y Huang, W Li, C Y Zhang
OBJECTIVE: To describe the surgical technique of direct anterior approach to total hip arthroplasty and to report the early clinical outcomes. METHODS: A series of 100 consecutive, unselected patients who had 116 primary total hip arthroplasty surgeries (16 bilateral) done through direct anterior approach from March 11 2015 to June 21 2016 was reviewed. There were 50 male patients and 50 female patients. The average patient age was 51 years, and the average body mass index was 24...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28416825/-comparison-of-efficacy-and-safety-between-the-anterior-and-the-posterior-approaches-to-total-hip-arthroplasty
#12
Y J Zhang, J Li, K Qi, C C Xue, W D Xu
OBJECTIVE: To compare the efficacy and safety between direct anterior approach (DAA) and posterior approach (PA) in total hip arthroplasty. METHODS: This study evaluated postoperative results of 92 consecutive total hip arthroplasties performed by a single surgeon; 44 from the DAA, and 48 from PA. The age, body mass index, operation time, blood loss, hospital stay, positioning of the artificial hip, postoperative Harris score and postoperative complications were recorded and analyzed...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28416824/-gait-analysis-at-the-early-stage-after-direct-anterior-approach-in-total-hip-arthroplasty
#13
H Y Wang, P D Kang, Y Nie, H Y Zhao, Z Y Yang, F X Pei
OBJECTIVE: To evaluate the result of operation and gait analysis at the early stage after direct anterior approach (DAA) in total hip arthroplasty (THA). METHODS: In this study, 20 patients who suffered from necrosis of femoral head or developmental dysplasia of the hip were scheduled to undergo THA. The basic information and visual analogue scale (VAS) score, Harris score before and after surgery were recorded. All of the patients finished the gait analysis before the surgery and 6 weeks and 12 weeks after the surgery, the data were compared with those of normal adult people...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28405725/the-posterolateral-approach-for-fluoroscopy-guided-tibiotalar-joint-injection
#14
Vanja Varenika, Jacob Harter, Edwin Chu, Lynne Steinbach
OBJECTIVE: To report a novel technique for tibiotalar joint injection that utilizes a posterolateral approach, including indications and technical considerations. METHODS: The posterolateral approach for tibiotalar injection is similar to that used in posterior subtalar joint injections. Using this technique, the tibiotalar joint space is accessed by directing the needle anterosuperiorly beneath the fibula until the posterior aspect of the talar dome has been reached...
April 12, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28403693/anterior-retropharyngeal-plate-screw-fixation-with-bilateral-anterior-transarticular-screws-for-odontoid-fractures-a-new-comprehensive-technique
#15
Sushil Patkar
INTRODUCTION: A certain group of odontoid fractures (Anderson and D' Alonzo Type-2) are usually offered surgical treatment. Common surgical option is an anterior odontoid screw. Some of the fractures are not suitable for anterior odontoid screw (anterior oblique, displaced distal fragments and those with atlantoaxial instability) and these are usually offered posterior transarticular screws (Magerl's) or posterior atlantoaxial screw rod/plate fixation (Goel-Harms technique). Posterior surgery involves atlantoaxial fixation with an indirect attempt to reduce and fuse the fracture ...
April 13, 2017: Neurological Research
https://www.readbyqxmd.com/read/28402528/macrovascular-decompression-of-the-brainstem-and-cranial-nerves-evolution-of-an-anteromedial-vertebrobasilar-artery-transposition-technique
#16
Omar Choudhri, Ian D Connolly, Michael T Lawton
BACKGROUND: Tortuous and dolichoectatic vertebrobasilar arteries can impinge on the brainstem and cranial nerves to cause compression syndromes. Transposition techniques are often required to decompress the brainstem with dolichoectatic pathology. We describe our evolution of an anteromedial transposition technique and its efficacy in decompressing the brainstem and relieving symptoms. OBJECTIVE: To present the anteromedial vertebrobasilar artery transposition technique for macrovascular decompression of the brainstem and cranial nerves...
April 11, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28398630/mitigating-differential-baseline-shifts-in-locally-advanced-lung-cancer-patients-using-an-average-anatomy-model
#17
Mehrsima Abdoli, Simon R van Kranen, Uros Stankovic, Maddalena M G Rossi, Jose S A Belderbos, Jan-Jakob Sonke
BACKGROUND AND PURPOSE: Differential baseline shifts between primary tumor and involved lymph nodes in locally advanced lung cancer patients compromise the accuracy of radiotherapy. The purpose of this study was to evaluate the performance of an average anatomy model (AAM) derived from repeat imaging and deformable registration to reduce these geometrical uncertainties. METHODS AND MATERIALS: An in-house implementation of a B-Spline deformable image registration (DIR) algorithm was first validated using three different validation approaches: 1) a circle method to test the consistency of the DIR, 2) fiducial marker target registration error, and 3) the recovery of a known deformation vector field (DVF)...
April 11, 2017: Medical Physics
https://www.readbyqxmd.com/read/28389885/anatomical-evaluation-of-lumbar-nerves-using-diffusion-tensor-imaging-and-implications-of-lateral-decubitus-for-lateral-transpsoas-approach
#18
Yasuhiro Oikawa, Yawara Eguchi, Atsuya Watanabe, Sumihisa Orita, Kazuyo Yamauchi, Miyako Suzuki, Yoshihiro Sakuma, Go Kubota, Kazuhide Inage, Takeshi Sainoh, Jun Sato, Kazuki Fujimoto, Masao Koda, Takeo Furuya, Koji Matsumoto, Yoshitada Masuda, Yasuchika Aoki, Kazuhisa Takahashi, Seiji Ohtori
PURPOSE: Recently, lateral interbody fusion (LIF) has become more prevalent, and evaluation of lumbar nerves has taken on new importance. We report on the assessment of anatomical relationships between lumbar nerves and vertebral bodies using diffusion tensor imaging (DTI). METHODS: Fifty patients with degenerative lumbar disease and ten healthy subjects underwent DTI. In patients with lumbar degenerative disease, we studied nerve courses with patients in the supine positions and with hips flexed...
April 7, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28383709/neural-reorganization-due-to-neonatal-amygdala-lesions-in-the-rhesus-monkey-changes-in-morphology-and-network-structure
#19
D S Grayson, E Bliss-Moreau, J Bennett, P Lavenex, D G Amaral
It is generally believed that neural damage that occurs early in development is associated with greater adaptive capacity relative to similar damage in an older individual. However, few studies have surveyed whole brain changes following early focal damage. In this report, we employed multimodal magnetic resonance imaging analyses of adult rhesus macaque monkeys who had previously undergone bilateral, neurotoxic lesions of the amygdala at about 2 weeks of age. A deformation-based morphometric approach demonstrated reduction of the volumes of the anterior temporal lobe, anterior commissure, basal ganglia, and pulvinar in animals with early amygdala lesions compared to controls...
April 5, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28378318/anterior-approach-to-improve-the-prognosis-in-hcc-patients-via-decreasing-dissemination-of-epcam-circulating-tumor-cells
#20
Shenghua Hao, Shaofei Chen, Caixue Tu, Taotao Huang
BACKGROUND: It is supposed that the improvement of prognosis in hepatocellular carcinoma (HCC) patient by anterior approach for liver resection was related to the decreasing hematogenic dissemination of circulating cancer cells. METHODS: The EpCAM(+) circulating tumor cells (CTCs) were detected in HCC patients having liver resection with either anterior approach (AA) or conventional approach (CA). The relation of CTCs to the 2-year recurrence and survival after surgery was investigated...
April 4, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
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