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Andrew Pearle

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https://www.readbyqxmd.com/read/29676215/being-and-becoming-a-helper-illness-disclosure-and-identity-transformations-among-indigenous-people-living-with-hiv-or-aids-in-saskatoon-saskatchewan
#1
Andrew R Hatala, Kelley Bird-Naytowhow, Tamara Pearl, Jen Peterson, Sugandhi Del Canto, Eddie Rooke, Stryker Calvez, Ryan Meili, Michael Schwandt, Jason Mercredi, Patti Tait
Saskatoon has nearly half of the diagnoses of HIV in Saskatchewan, Canada, with an incidence rate among Indigenous populations within inner-city contexts that is 3 times higher than national rates. Previous research does not adequately explore the relations between HIV vulnerabilities within these contexts and the experiences of illness disclosure that are informed by identity transformations, experiences of stigma, and social support. From an intersectionality framework and a constructivist grounded theory approach, this research involved in-depth, semistructured interviews with 21 Indigenous people living with HIV and/or AIDS in Saskatoon, both male and female...
April 1, 2018: Qualitative Health Research
https://www.readbyqxmd.com/read/29629813/summative-report-on-time-out-of-play-for-major-and-minor-league-baseball-an-analysis-of-49-955-injuries-from-2011-through-2016
#2
Christopher L Camp, Joshua S Dines, Jelle P van der List, Stan Conte, Justin Conway, David W Altchek, Struan H Coleman, Andrew D Pearle
BACKGROUND: Recent epidemiologic reports have demonstrated rising injury rates in Major League Baseball (MLB) and Minor League Baseball (MiLB). Although several studies have recently been published on specific injuries, the majority of injuries have not yet been formally studied. PURPOSE: The purpose of this study is to (1) generate a summative analysis of all injuries that occur in MLB and MiLB, (2) identify the 50 most common injuries, and (3) generate focused reports and fact sheets on the characteristics of each of those diagnoses...
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29590123/ontogeny-of-juvenile-freshwater-pearl-mussels-margaritifera-margaritifera-bivalvia-margaritiferidae
#3
Louise Lavictoire, Andrew D Ramsey, Evelyn A Moorkens, Graham Souch, M Christopher Barnhart
The gills of juvenile freshwater bivalves undergo a complex morphogenesis that may correlate with changes in feeding ecology, but ontogenic studies on juvenile mussels are rare. Scanning electron microscopy was used to examine the ultrastructure and ontogeny of 117 juvenile freshwater pearl mussels (Margaritifera margaritifera) ranging in age from 1-44 months and length from 0.49-8.90 mm. Three stages of gill development are described. In Stage 1 (5-9 inner demibranch filaments), only unreflected inner demibranch filaments were present...
2018: PloS One
https://www.readbyqxmd.com/read/29555499/robotic-assisted-unicompartmental-knee-arthroplasty-state-of-the-art-and-review-of-the-literature
#4
Alexander B Christ, Andrew D Pearle, David J Mayman, Steven B Haas
BACKGROUND: Unicompartmental knee arthroplasty is a successful treatment for unicompartmental knee osteoarthritis that has lower complication rates, faster recovery, and a more natural feeling knee compared to total knee arthroplasty. However, long-term survival has been a persistent concern. As more surgeon-controlled variables have been linked to survival, interest in robotic-assisted surgery has continued to grow. Robotic-assisted surgery has demonstrated the ability. METHODS: A review and synthesis of the literature on the subject of robotic-assisted unicompartmental knee arthroplasty was performed...
March 16, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29529625/femoral-component-external-rotation-affects-knee-biomechanics-a-computational-model-of-posterior-stabilized-tka
#5
Mohammad Kia, Timothy M Wright, Michael B Cross, David J Mayman, Andrew D Pearle, Peter K Sculco, Geoffrey H Westrich, Carl W Imhauser
BACKGROUND: The correct amount of external rotation of the femoral component during TKA is controversial because the resulting changes in biomechanical knee function associated with varying degrees of femoral component rotation are not well understood. We addressed this question using a computational model, which allowed us to isolate the biomechanical impact of geometric factors including bony shapes, location of ligament insertions, and implant size across three different knees after posterior-stabilized (PS) TKA...
January 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29486909/midterm-survivorship-and-patient-satisfaction-of-robotic-arm-assisted-medial-unicompartmental-knee-arthroplasty-a-multicenter-study
#6
Laura J Kleeblad, Todd A Borus, Thomas M Coon, Jon Dounchis, Joseph T Nguyen, Andrew D Pearle
BACKGROUND: Studies have showed improved accuracy of lower leg alignment, precise component position, and soft-tissue balance with robotic-assisted unicompartmental knee arthroplasty (UKA). No studies, however, have assessed the effect on midterm survivorship. Therefore, the purpose of this prospective, multicenter study was to determine midtem survivorship, modes of failure, and satisfaction of robotic-assisted medial UKA. METHODS: A total of 473 consecutive patients (528 knees) underwent robotic-arm-assisted medial UKA surgery at 4 separate institutions between March 2009 and December 2011...
January 31, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29311629/climate-warming-as-a-possible-trigger-of-keystone-mussel-population-decline-in-oligotrophic-rivers-at-the-continental-scale
#7
Ivan N Bolotov, Alexander A Makhrov, Mikhail Yu Gofarov, Olga V Aksenova, Paul E Aspholm, Yulia V Bespalaya, Mikhail B Kabakov, Yulia S Kolosova, Alexander V Kondakov, Thomas Ofenböck, Andrew N Ostrovsky, Igor Yu Popov, Ted von Proschwitz, Mudīte Rudzīte, Māris Rudzītis, Svetlana E Sokolova, Ilmari Valovirta, Ilya V Vikhrev, Maxim V Vinarski, Alexey A Zotin
The effects of climate change on oligotrophic rivers and their communities are almost unknown, albeit these ecosystems are the primary habitat of the critically endangered freshwater pearl mussel and its host fishes, salmonids. The distribution and abundance of pearl mussels have drastically decreased throughout Europe over the last century, particularly within the southern part of the range, but causes of this wide-scale extinction process are unclear. Here we estimate the effects of climate change on pearl mussels based on historical and recent samples from 50 rivers and 6 countries across Europe...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29244223/fixed-bearing-medial-unicompartmental-knee-arthroplasty-restores-neither-the-medial-pivoting-behavior-nor-the-ligament-forces-of-the-intact-knee-in-passive-flexion
#8
Mohammad Kia, Lucian C Warth, Joseph D Lipman, Timothy M Wright, Geoffrey H Westrich, Michael B Cross, David J Mayman, Andrew D Pearle, Carl W Imhauser
Medial unicompartmental knee arthroplasty (UKA) is an accepted treatment for isolated medial osteoarthritis. However, using an improper thickness for the tibial component may contribute to early failure of the prosthesis or disease progression in the unreplaced lateral compartment. Little is known of the effect of insert thickness on both knee kinematics and ligament forces. Therefore, a computational model of the tibiofemoral joint was used to determine how non-conforming, fixed bearing medial UKA affects tibiofemoral kinematics, and tension in the medial collateral ligament (MCL) and the anterior cruciate ligament (ACL) during passive knee flexion...
December 15, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29228338/operative-nuances-of-stereotactic-leksell-frame-based-depth-electrode-implantation
#9
Holger Joswig, Carolyn M Benson, Andrew G Parrent, Keith W MacDougall, David A Steven
Background: For intracranial electroencephalographic monitoring, stereotactically implanted depth electrodes are increasingly used at epilepsy centers around the world. Objective: To identify pearls and pitfalls from our experience with stereotactic Leksell (Elekta AB, Stockhom, Sweden) frame-based depth electrode implantation. Methods: An intraoperative video of the implantation technique was recorded. Results: A detailed description and a video on how to implant depth electrodes using the stereotactic Leksell frame is provided...
December 7, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29185005/larger-range-of-motion-and-increased-return-to-activity-but-higher-revision-rates-following-unicompartmental-versus-total-knee-arthroplasty-in-patients-under-65-a-systematic-review
#10
REVIEW
Laura J Kleeblad, Jelle P van der List, Hendrik A Zuiderbaan, Andrew D Pearle
PURPOSE: Due to the lack of comparative studies, a systematic review was conducted to determine revision rates of unicompartmental and total knee arthroplasty (UKA and TKA), and compare functional outcomes, range of motion and activity scores in patients less than 65 years of age. METHODS: A literature search was performed using PubMed, Embase, and Cochrane systems since 2000. 27 UKA and 33 TKA studies were identified and included. Annual revision rate (ARR), functional outcomes, and return to activity were assessed for both types of arthroplasty using independent t tests...
November 28, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29149863/pearls-and-pitfalls-in-comprehensive-critical-care-echocardiography
#11
REVIEW
Sam Orde, Michel Slama, Andrew Hilton, Konstantin Yastrebov, Anthony McLean
Critical care echocardiography is developing rapidly with an increasing number of specialists now performing comprehensive studies using Doppler and other advanced techniques. However, this imaging can be challenging, interpretation is far from simple in the complex critically ill patient and mistakes can be easy to make. We aim to address clinically relevant areas where potential errors may occur and suggest methods to hopefully improve accuracy of imaging and interpretation.
November 17, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29149472/which-commonly-monitored-chemical-contaminant-in-the-bohai-region-and-the-yangtze-and-pearl-rivers-of-china-poses-the-greatest-threat-to-aquatic-wildlife
#12
Andrew C Johnson, Monika D Jürgens, Chao Su, Meng Zhang, Yueqing Zhang, Yajuan Shi, Andrew Sweetman, Xiaowei Jin, Yonglong Lu
The present study assessed the relative risk of 29 chemical contaminants to aquatic wildlife in the Bohai region and the Yangtze and Pearl Rivers of China. River monitoring data from 2010 to 2015 for metals, pesticides, plasticizers, surfactants, polyaromatic hydrocarbons, flame retardants, and ammonia were collected. For each chemical, ecotoxicity data were compiled for Chinese-relevant aquatic species. The chemicals were ranked by relative risk either by comparing the ratios of the median river concentration divided by the median ecotoxicity concentration or by the percentage of river measurements which exceeded the lower 10th percentile ecotoxicity value...
April 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29131768/from-inguinal-hernias-to-spermatic-cord-lipomas-pearls-pitfalls-and-mimics-of-abdominal-and-pelvic-hernias
#13
Miguel C Cabarrus, Benjamin M Yeh, Andrew S Phelps, Jao J Ou, Spencer C Behr
Abdominal and pelvic hernias may be indolent and detected incidentally, manifest acutely with pain and distress, or cause chronic discomfort. Physical examination findings are often ambiguous and insufficient for optimal triage. Therefore, accurate anatomic delineation and identification of complications are critical for effective treatment planning. Imaging, particularly computed tomography, provides a vital understanding of the hernia's location and size, involved viscera, and severity of associated complications...
November 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29078961/new-parameters-describing-how-knee-ligaments-carry-force-in-situ-predict-interspecimen-variations-in-laxity-during-simulated-clinical-exams
#14
Carl W Imhauser, Robert N Kent, James Boorman-Padgett, Ran Thein, Thomas L Wickiewicz, Andrew D Pearle
Knee laxity, defined as the net translation or rotation of the tibia relative to the femur in a given direction in response to an applied load, is highly variable from person to person. High levels of knee laxity as assessed during routine clinical exams are associated with first-time ligament injury and graft reinjury following reconstruction. During laxity exams, ligaments carry force to resist the applied load; however, relationships between intersubject variations in knee laxity and variations in how ligaments carry force as the knee moves through its passive envelope of motion, which we refer to as ligament engagement, are not well established...
October 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29074321/predicting-the-feasibility-of-correcting-mechanical-axis-in-large-varus-deformities-with-unicompartmental-knee-arthroplasty
#15
Laura J Kleeblad, Jelle P van der List, Andrew D Pearle, Austin T Fragomen, S Robert Rozbruch
BACKGROUND: Due to disappointing historical outcomes of unicompartmental knee arthroplasty (UKA), Kozinn and Scott proposed strict selection criteria, including preoperative varus alignment of ≤15°, to improve the outcomes of UKA. No studies to date, however, have assessed the feasibility of correcting large preoperative varus deformities with UKA surgery. The study goals were therefore to (1) assess to what extent patients with large varus deformities could be corrected and (2) determine radiographic parameters to predict sufficient correction...
October 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29054315/cord-topographical-anatomy-and-its-role-in-evaluating-intramedullary-lesions
#16
REVIEW
James Andrew Spain, Scott Cressman, Horia Marin, Suresh C Patel, John J Corrigan, Brent Griffith
Intramedullary spinal lesions present a wide differential diagnosis including infectious, inflammatory, traumatic, ischemic, benign, or malignant neoplastic etiologies. Using knowledge of anatomy and physiology within the spinal cord, many similar appearing entities can be parsed into a prioritized differential. The purpose of this article is to review anatomy and pathophysiology of the spinal cord, with subsequent discussion of how this knowledge can be used to differentiate several similar appearing intramedullary pathologic processes...
September 18, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/29049055/oxidized-regenerated-cellulose-collagen-dressings-review-of-evidence-and-recommendations
#17
Stephanie Wu, Andrew J Applewhite, Jeffrey Niezgoda, Robert Snyder, Jayesh Shah, Breda Cullen, Gregory Schultz, Janis Harrison, Rosemary Hill, Melania Howell, Marcus Speyrer, Howard Utra, Jean de Leon, Wayne Lee, Terry Treadwell
OBJECTIVE: Healthcare systems are being challenged to manage increasing numbers of nonhealing wounds. Wound dressings are one of the first lines of defense in wound management, and numerous options exist. The oxidized regenerated cellulose (ORC)/collagen dressing may offer healthcare providers a robust and cost-effective tool for use in a variety of wounds. DESIGN: A multidisciplinary panel meeting was convened to discuss the use of ORC/collagen dressings in wound care and provide practice recommendations...
November 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28983215/mid-term-outcomes-of-metal-backed-unicompartmental-knee-arthroplasty-show-superiority-to-all-polyethylene-unicompartmental-and-total-knee-arthroplasty
#18
Jelle P van der List, Laura J Kleeblad, Hendrik A Zuiderbaan, Andrew D Pearle
BACKGROUND: Two commonly used tibial designs for unicompartmental knee arthroplasty (UKA) are all-polyethylene "inlay" and metal-backed "onlay" components. Biomechanical studies showed that the metal baseplate in onlay designs better distributes forces over the tibia but studies failed to show differences in functional outcomes between both designs at mid-term follow-up. Furthermore, no studies have compared both designs with total knee arthroplasty (TKA). QUESTIONS/PURPOSES: The goal of this study was to compare outcomes of inlay UKA and onlay UKA at mid-term follow-up and compare these with TKA outcomes...
October 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28922347/pearl-millet-genome-sequence-provides-a-resource-to-improve-agronomic-traits-in-arid-environments
#19
Rajeev K Varshney, Chengcheng Shi, Mahendar Thudi, Cedric Mariac, Jason Wallace, Peng Qi, He Zhang, Yusheng Zhao, Xiyin Wang, Abhishek Rathore, Rakesh K Srivastava, Annapurna Chitikineni, Guangyi Fan, Prasad Bajaj, Somashekhar Punnuri, S K Gupta, Hao Wang, Yong Jiang, Marie Couderc, Mohan A V S K Katta, Dev R Paudel, K D Mungra, Wenbin Chen, Karen R Harris-Shultz, Vanika Garg, Neetin Desai, Dadakhalandar Doddamani, Ndjido Ardo Kane, Joann A Conner, Arindam Ghatak, Palak Chaturvedi, Sabarinath Subramaniam, Om Parkash Yadav, Cécile Berthouly-Salazar, Falalou Hamidou, Jianping Wang, Xinming Liang, Jérémy Clotault, Hari D Upadhyaya, Philippe Cubry, Bénédicte Rhoné, Mame Codou Gueye, Ramanjulu Sunkar, Christian Dupuy, Francesca Sparvoli, Shifeng Cheng, R S Mahala, Bharat Singh, Rattan S Yadav, Eric Lyons, Swapan K Datta, C Tom Hash, Katrien M Devos, Edward Buckler, Jeffrey L Bennetzen, Andrew H Paterson, Peggy Ozias-Akins, Stefania Grando, Jun Wang, Trilochan Mohapatra, Wolfram Weckwerth, Jochen C Reif, Xin Liu, Yves Vigouroux, Xun Xu
Pearl millet [Cenchrus americanus (L.) Morrone] is a staple food for more than 90 million farmers in arid and semi-arid regions of sub-Saharan Africa, India and South Asia. We report the ∼1.79 Gb draft whole genome sequence of reference genotype Tift 23D2B1-P1-P5, which contains an estimated 38,579 genes. We highlight the substantial enrichment for wax biosynthesis genes, which may contribute to heat and drought tolerance in this crop. We resequenced and analyzed 994 pearl millet lines, enabling insights into population structure, genetic diversity and domestication...
October 2017: Nature Biotechnology
https://www.readbyqxmd.com/read/28697861/regional-femoral-and-tibial-radiolucency-in-cemented-unicompartmental-knee-arthroplasty-and-the-relationship-to-functional-outcomes
#20
Laura J Kleeblad, Jelle P van der List, Hendrik A Zuiderbaan, Andrew D Pearle
BACKGROUND: Femoral and tibial radiolucent lines (RLL) after unicompartmental knee arthroplasty (UKA) can be categorized in physiological and pathological radiolucencies. Although physiological tibial radiolucency is assessed extensively in literature, studies reporting femoral radiolucency are lacking. Therefore, a retrospective study was performed to assess physiological femoral RLL and its relationship to short-term functional outcomes. METHODS: A total of 352 patients were included who underwent robotic-assisted medial UKA surgery and received a fixed-bearing metal-backed cemented medial UKA...
November 2017: Journal of Arthroplasty
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