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https://www.readbyqxmd.com/read/28917617/change-in-acetabular-cup-orientation-from-supine-to-standing-position-and-its-effect-on-wear-of-highly-crosslinked-polyethylene
#1
Matthew G Teeter, Prateek Goyal, Xunhua Yuan, James L Howard, Brent A Lanting
BACKGROUND: The purpose of this study is to measure acetabular cup position and wear of the highly crosslinked polyethylene liner in the supine and standing position for patients at a minimum of 10 years after the operation. METHODS: A total of 38 patients were recruited at a mean of 12.5 years after the operation. All patients received a single acetabular cup design with a highly crosslinked liner and a 28-mm cobalt-chromium femoral head. Patients underwent supine and standing radiostereometric examinations in which the X-ray sources and detectors were positioned to obtain an anterior-posterior and cross-table lateral radiograph...
August 31, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28913401/use-of-iphone-technology-in-improving-acetabular-component-position-in-total-hip-arthroplasty
#2
Xiau Wei Tay, Benny Xu Zhang, George Gayagay
Improper acetabular cup positioning is associated with high risk of complications after total hip arthroplasty. The aim of our study is to objectively compare 3 methods, namely (1) free hand, (2) alignment jig (Sputnik), and (3) iPhone application to identify an easy, reproducible, and accurate method in improving acetabular cup placement. We designed a simple setup and carried out a simple experiment (see Method section). Using statistical analysis, the difference in inclination angles using iPhone application compared with the freehand method was found to be statistically significant (F[2,51] = 4...
September 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28894664/aesthetic-female-to-male-chest-transformation-power-of-combining-modified-mastectomy-with-a-pectoral-implant
#3
Turkia Abbed, David A Shifrin
Gender reassignment surgery has gained in popularity with increased media exposure and society's recognition of gender dysphoria. Female-to-male gender reassignment often begins with the "top" or chest surgery. Mastectomy with free nipple grafting is the most frequently described technique in the literature. This technique is reliable yet lacks the ability to provide a true male chest shape. We discuss our technique for female-to-male "top" surgery combining traditional mastectomy techniques with a lower pole pedicle vascularized areola and a pectoral implant...
August 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28885650/the-posterior-acetabular-wall-paw-an-aid-to-acetabular-orientation-at-primary-tha
#4
Huw L M Williams, Gavin E Bartlett, Mark R Norton, Rory G Middleton
INTRODUCTION: Incorrect acetabular component positioning during total hip arthroplasty (THA) may lead to dislocation, impingement, wear and revision. Surgeons commonly use the transverse acetabular ligament (TAL) as a landmark for acetabular component orientation. The posterior acetabular wall (PAW) is a structure easily viewed on plain radiography and its position can help guide acetabular component position. In this study, we examine the efficacy of preoperative radiographs in predicting cup position relative to the PAW...
September 7, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28885648/improving-registration-accuracy-during-total-hip-arthroplasty-a-cadaver-study-of-a-new-3-d-mini-optical-navigation-system
#5
Michael B Cross, Ran Schwarzkopf, Theodore T Miller, Eric A Bogner, Jeffrey M Muir, Jonathan M Vigdorchik
INTRODUCTION: Maintaining accuracy of component placement is an important step in ensuring the long-term stability of components during total hip arthroplasty (THA). Computer-assisted navigation has improved accuracy but errors associated with the registration process are known to impact the accuracy of final measurements. The purpose of this cadaver study was to determine the registration error associated with a novel mini-navigation system. METHODS: 3 board-certified orthopaedic surgeons performed 4 THA procedures each via the posterolateral approach on 6 cadavers (12 hips) using the mini-navigation tool...
September 2, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28882121/evaluation-of-a-peer-education-program-on-student-leaders-energy-balance-related-behaviors
#6
B C Foley, V A Shrewsbury, L L Hardy, V M Flood, K Byth, S Shah
BACKGROUND: Few studies have reported energy balance-related behavior (EBRB) change for peer leaders delivering health promotion programs to younger students in secondary schools. Our study assessed the impact of the Students As LifeStyle Activists (SALSA) program on SALSA peer leaders' EBRBs, and their intentions regarding these behaviors. METHODS: We used a pre-post study design to assess changes in EBRBs and intentions of Year 10 secondary school students (15-16 year olds) who volunteered to be peer leaders to deliver the SALSA program to Year 8 students (13-14 year olds)...
September 7, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28871431/involvement-of-nac-transcription-factor-sinac1-in-a-positive-feedback-loop-via-aba-biosynthesis-and-leaf-senescence-in-foxtail-millet
#7
Tingting Ren, Jiawei Wang, Mingming Zhao, Xiaoming Gong, Shuxia Wang, Geng Wang, Chunjiang Zhou
The foxtail millet NAC transcription factor NAC1, an ortholog of Arabidopsis NAP, is induced by ABA and senescence and accelerates leaf senescence by promoting ABA biosynthesis. Leaf senescence, a unique developmental stage involving macromolecule degradation and nutrient remobilization, is finely tuned and tightly controlled by different gene families. NO APICAL MERISTEM, ARABIDOPSIS ATAF1, and CUP-SHAPED COTYLEDON (NAC) transcription factors have been demonstrated to be involved in the modulation of leaf senescence in many land plant species...
September 4, 2017: Planta
https://www.readbyqxmd.com/read/28870743/accuracy-of-cup-positioning-with-the-computed-tomography-based-two-dimensional-to-three-dimensional-matched-navigation-system-a-prospective-randomized-controlled-study
#8
Kazuki Yamada, Hirosuke Endo, Tomonori Tetsunaga, Takamasa Miyake, Tomoaki Sanki, Toshifumi Ozaki
BACKGROUND: The accuracy of various navigation systems used for total hip arthroplasty has been described, but no publications reported the accuracy of cup orientation in computed tomography (CT)-based 2D-3D (two-dimensional to three-dimensional) matched navigation. METHODS: In a prospective, randomized controlled study, 80 hips including 44 with developmental dysplasia of the hips were divided into a CT-based 2D-3D matched navigation group (2D-3D group) and a paired-point matched navigation group (PPM group)...
August 12, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28861192/comparison-of-outcomes-of-total-hip-arthroplasty-between-patients-with-ankylosing-spondylitis-and-avascular-necrosis-of-the-femoral-head
#9
Sun-Ho Lee, Gun-Woo Lee, Young-Jun Seol, Kyung-Soon Park, Taek-Rim Yoon
BACKGROUND: The objective of this study was to compare clinical and radiological outcomes of total hip arthroplasty (THA) between ankylosing spondylitis (AS) of the hip joint and avascular necrosis (AVN) of the femoral head. METHODS: Thirty patients (30 hips) underwent cementless THA for AS between 2003 and 2012. They were compared to 30 patients (30 hips) who underwent the same procedure for AVN of the femoral head. Each group was matched for age and gender, and both groups had similar preoperative demographic characteristics...
September 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/28853102/an-up-to-date-meta-analysis-of-coffee-consumption-and-risk-of-prostate-cancer
#10
Jiadong Xia, Jie Chen, Jian-Xin Xue, Jie Yang, Zeng-Jun Wang
PURPOSE: Results of the association between coffee consumption (CC) and the risk of prostate cancer (PC) are still controversy. Based on published relevant studies, we conducted an up-to-date meta-analysis to investigatethis issue. MATERIALS AND METHODS: The protocol used in this article is in accordance with the PRISMA checklist. Eligible studies were screened and retrieved by using PUBMED and EMBASE as well as manual review of references up to July 2016. We calculated the pooled relative risk (RR) with 95% confidence interval (CI) with random effect models...
August 29, 2017: Urology Journal
https://www.readbyqxmd.com/read/28852355/how-reliable-is-the-acetabular-cup-position-assessment-from-routine-radiographs
#11
Jaime A Carvajal Alba, Heather K Vincent, Jagdeep S Sodhi, Loren L Latta, Hari K Parvataneni
BACKGROUND: Cup position is crucial for optimal outcomes in total hip arthroplasty. Radiographic assessment of component position is routinely performed in the early postoperative period. AIMS: The aims of this study were to determine in a controlled environment if routine radiographic methods accurately and reliably assess the acetabular cup position and to assess if there is a statistical difference related to the rater's level of training. METHODS: A pelvic model was mounted in a spatial frame...
2017: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/28851263/efficacy-of-a-computed-tomography-based-navigation-system-for-placement-of-the-acetabular-component-in-total-hip-arthroplasty-for-developmental-dysplasia-of-the-hip
#12
Takahiko Tsutsui, Tomohiro Goto, Keizo Wada, Tomoya Takasago, Daisuke Hamada, Koichi Sairyo
PURPOSE: Developmental dysplasia of the hip (DDH) presents a considerable surgical challenge in total hip arthroplasty (THA). Although the usefulness of computed tomography (CT)-based navigation in cup alignment has been reported, few reports have evaluated three-dimensional (3-D) cup positioning against the acetabulum specifically in patients with DDH. The purpose of this study was to evaluate the efficacy of a CT-based navigation system for alignment and spatial positioning of the cup in THA for patients with DDH...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28842970/steroid-profile-and-irms-analysis-of-musk-administration-for-doping-control
#13
Jingzhu Wang, Yi He, Xin Liu, Zhiyong Yang, Wenning Yang
Musk, the dried secretion of the musk pod (sac) of adult male musk deer, has been used as traditional Chinese Medicine (TCM) in China and south-east Asian countries for thousands of years. Due to the anabolic steroid component in this TCM, musk preparations have been included in the list of medical products containing prohibited substances employed for doping by the State Food and Drug Administration of China. The application of musk pod formulation was claimed to be responsible for some adverse analytical findings (AAF) in the 2011 FIFA Women's World Cup...
August 25, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28842292/using-game-authoring-platforms-to-develop-screen-based-simulated-functional-assessments-in-persons-with-executive-dysfunction-following-traumatic-brain-injury
#14
David Martínez-Pernía, Javier Núñez-Huasaf, Ángel Del Blanco, Amparo Ruiz-Tagle, Juan Velásquez, Mariela Gomez, Carl Robert Blesius, Agustin Ibañez, Baltasar Fernández-Manjón, Andrea Slachevsky
The assessment of functional status is a critical component of clinical neuropsychological evaluations used for both diagnostic and therapeutic purposes in patients with cognitive brain disorders. There are, however, no widely adopted neuropsychological tests that are both ecologically valid and easily administered in daily clinical practice. This discrepancy is a roadblock to the widespread adoption of functional assessments. In this paper, we propose a novel approach using a serious game authoring platform (eAdventure) for creating screen-based simulated functional assessments...
August 22, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28828087/high-speed-running-and-sprinting-profiles-of-elite-soccer-players
#15
Javier Miñano-Espin, Luis Casáis, Carlos Lago-Peñas, Miguel Ángel Gómez-Ruano
Real Madrid was named as the best club of the 20th century by the International Federation of Football History and Statistics. The aim of this study was to compare if players from Real Madrid covered shorter distances than players from the opposing team. One hundred and forty-nine matches including league, cup and UEFA Champions League matches played by the Real Madrid were monitored during the 2001-2002 to the 2006-2007 seasons. Data from both teams (Real Madrid and the opponent) were recorded. Altogether, 2082 physical performance profiles were examined, 1052 from the Real Madrid and 1031 from the opposing team (Central Defenders (CD) = 536, External Defenders (ED) = 491, Central Midfielders (CM) = 544, External Midfielders (EM) = 233, and Forwards (F) = 278)...
September 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28827535/effect-of-genetic-information-and-information-about-caffeine-content-on-caffeine-withdrawal-symptoms
#16
Llewellyn Mills, Ilan Dar-Nimrod, Ben Colagiuri
This study sought to test the effect of genetic information and information about the caffeine content of a beverage on caffeine withdrawal, specifically if: (1) being informed that one has tested positive for a gene related to caffeine withdrawal can produce an exaggerated caffeine withdrawal response during abstinence; (2) belief that one has consumed caffeine leads to a reduction in withdrawal symptoms when no caffeine is consumed. Regular coffee drinkers were given a bogus genetic test and were told either that they had tested positive or negative for a gene related to withdrawal...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818007/kiwi-omnicup-handheld-vs-mityvac-m-style-conventional-vacuum-system-a-retrospective-observational-study
#17
Tal Weissbach, Nasreen Hag-Yahia, Michal Ovadia, Keren Tzadikevitch Geffen, Omer Weitzner, Tal Biron-Shental
INTRODUCTION: To improve choice of vacuum-assisted delivery (VAD) system, we compared outcomes of Kiwi handheld system and Mityvac M-style conventional system (both use disposable plastic cups). MATERIALS AND METHODS: Retrospective observational study with data collection from electronic medical records. The study was conducted at a tertiary medical center, with approximately 7000 deliveries annually. Categorical and continuous variables were analyzed using chi-square test and t-test, respectively...
August 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28809634/-wear-and-roughness-of-bearing-surface-in-retrieved-polyethylene-bicon-plus-cups
#18
M Ranuša, J Gallo, M Hobza, M Vrbka, D Nečas, M Hartl
PURPOSE OF THE STUDY By 7th December 2016, 4,755 Bicon-Plus cups in total were implanted in the Czech Republic. Some of them have been continuously re-operated, while the most frequent reason of failure is polyethylene wear and aseptic loosening. The present study is focused on surface analysis of retrieved polyethylene Bicon-Plus cups and the determination of the roughness of their bearing surfaces. MATERIAL AND METHODS In this study, we had 13 high molecular weight polyethylene cups with the average time in situ of 8...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28803815/patient-specific-contact-stress-does-not-predict-polyethylene-wear-rate-in-a-specific-pressfit-cup
#19
Georg Matziolis, Linda Krakow, Frank Layher, Klaus Sander, Joerg Bossert, Steffen Brodt
BACKGROUND: The most common reason for revision total hip arthroplasty remains polyethylene wear. Development dysplasia of the hip and revision situations requires a conscious compromise of implant position. The surgeon should know about the consequence on wear via a possible change in hip contact force. The objective of this study is to investigate whether annual wear is dependent on hip contact force. METHODS: Forty-five inserts (DuraLoc, DePuy) that were explanted in our department were included...
July 25, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28797550/optical-coherence-tomography-angiography-of-the-peripapillary-retina-in-primary-angle-closure-glaucoma
#20
Shunhua Zhang, Chan Wu, Liang Liu, Yali Jia, Yao Zhang, Yang Zhang, Hua Zhang, Yong Zhong, David Huang
PURPOSE: To measure the change of peripapillary retinal vessel density (VD) in eyes with a history of acute primary angle closure glaucoma (PACG). DESIGN: Case-control study. METHODS: Twenty-one consecutive Chinese patients with history of unilateral acute PACG were enrolled. Eyes with acute PACG constituted the case group, while the contralateral eyes without attack constituted the control. All patients underwent ophthalmic examinations including best-corrected visual acuity, intraocular pressure, and visual field (VF)...
August 7, 2017: American Journal of Ophthalmology
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