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https://www.readbyqxmd.com/read/29471253/high-performance-resorbable-composites-for-load-bearing-bone-fixation-devices
#1
Bryant Heimbach, Beril Tonyali, Dianyun Zhang, Mei Wei
Bone fractures are some of the most common injuries annually, and many require a fixation device to help properly heal. The present study focuses on developing a bioresorbable composite that has high strength and stiffness for bone fixation applications. To achieve this, a design of experiments was performed, testing the effect of long fiber reinforcement type, matrix type, matrix amount, and particle reinforcement amount on the flexural properties of the composite. Based on these results, the ideal resorbable long fiber reinforcement, particle reinforcement, and matrix material are degummed silk fibroin, hydroxyapatite, and polylactic acid, respectively...
February 19, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29471158/road-traffic-injuries-cross-sectional-cluster-randomized-countrywide-population-data-from-4-low-income-countries
#2
Syed Nabeel Zafar, Joseph K Canner, Neeraja Nagarajan, Adam L Kushner
INTRODUCTION: Road traffic injuries (RTI) are a leading cause of morbidity and mortality around the world. The burden is highest in low and middle-income countries (LMICs) and is increasing. We aimed to describe the epidemiology of RTIs in 4 low-income countries using nationally representative survey data. METHODS: The Surgeons Overseas Assessment of Surgical Needs (SOSAS) survey tool was administered in four countries: Sierra Leone, Rwanda, Nepal and Uganda. We performed nationally representative cross-sectional, cluster randomized surveys in each country...
February 19, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29471156/sliding-hip-screw-versus-cannulated-cancellous-screws-for-fixation-of-femoral-neck-fracture-in-adults-a-systematic-review
#3
REVIEW
Jian-Xiong Ma, Ming-Jie Kuang, Fei Xing, Yun-Long Zhao, Heng-Ting Chen, Lu-Kai Zhang, Zheng-Rui Fan, Chao Han, Xin-Long Ma
OBJECTIVE: Femoral neck fracture is considered a difficult fracture to treat and often gives rise to unsatisfactory treatment results. Cannulated cancellous screws (CCS) or a sliding hip screw (SHS) are the mainstream internal fixations used for osteosynthesis of femoral neck fractures. There is a need to integrate existing data through a meta-analysis to investigate the safety and effectiveness of CCS and SHS in the treatment of femoral neck fractures. METHOD: According to the Cochrane Handbook for Systematic Reviews of Interventions, we screened for the relevant studies by searching Google Scholar, the Cochrane Controlled Trials Register, the Cochrane Library, Web of Science, EMBASE, and PubMed...
February 19, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29471078/development-of-controlled-drug-delivery-systems-for-bone-fracture-targeted-therapeutic-delivery-a-review
#4
REVIEW
Yuchen Wang, Maureen R Newman, Danielle S W Benoit
Impaired fracture healing is a major clinical problem that can lead to patient disability, prolonged hospitalization, and significant financial burden. Although the majority of fractures heal using standard clinical practices, approximately 10% suffer from delayed unions or non-unions. A wide range of factors contribute to the risk for nonunions including internal factors, such as patient age, gender, and comorbidities, and external factors, such as the location and extent of injury. Current clinical approaches to treat nonunions include bone grafts and low-intensity pulsed ultrasound (LIPUS), which realizes clinical success only to select patients due to limitations including donor morbidities (grafts) and necessity of fracture reduction (LIPUS), respectively...
February 19, 2018: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29470959/differential-effects-of-serotonin-reuptake-inhibitors-fluoxetine-and-escitalopram-on-bone-markers-and-microarchitecture-in-wistar-rats
#5
Manoj Kumar, Ravisha Wadhwa, Priyanka Kothari, Ritu Trivedi, Divya Vohora
Evidence from several studies indicates that the long-term treatment of selective serotonin reuptake inhibitors (SSRIs) is associated with a decrease in bone mass and increase the risk of fractures. The present work evaluated and compared the effect of treatment with two SSRIs viz. fluoxetine and escitalopram on bone biomarkers (P1NP and βCTX) in male Wistar rats. In addition, the effect of these drugs on bone microarchitecture of lumbar and tibia bones was carried out. Fluoxetine (8.2mg/kg) treatment for 40 days significantly reduced (P< 0...
February 19, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29470854/the-cost-effectiveness-of-screening-in-the-community-to-reduce-osteoporotic-fractures-in-older-women-in-the-uk-economic-evaluation-of-the-scoop-study
#6
David A Turner, Rebekah Fong Soe Khioe, Lee Shepstone, Elizabeth Lenaghan, Cyrus Cooper, Neil Gittoes, Nicholas C Harvey, Richard Holland, Amanda Howe, Eugene McCloskey, Terence W O'Neill, David Torgerson, Richard Fordham
The SCOOP study was a two-arm randomized controlled trial conducted in the UK in 12,483 eligible women aged 70 to 85 years. It compared a screening program using the FRAX® risk assessment tool in addition to bone mineral density (BMD) measures versus usual management. The SCOOP study found a reduction in the incidence of hip fractures in the screening arm, but there was no evidence of a reduction in the incidence of all osteoporosis-related fractures. To make decisions about whether to implement any screening program, we should also consider whether the program is likely to be a good use of health care resources, ie, is it cost-effective? The cost per gained quality adjusted life year of screening for fracture risk has not previously been demonstrated in an economic evaluation alongside a clinical trial...
February 22, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29470637/a-higher-association-of-medial-collateral-ligament-injury-of-the-knee-in-pronation-injuries-of-the-ankle
#7
Kyu-Tae Hwang, Il-Hoon Sung, Jung-Hwan Choi, Jin Kyu Lee
INTRODUCTION: To evaluate the prevalence of medial collateral ligament (MCL) injury of the knee among ankle-fracture patients and to determine the risk factors associated with MCL injury in this patient group. MATERIALS AND METHODS: 303 patients (303 affected ankles) who underwent surgical treatment for an ankle fracture were assessed. Supination versus pronation injury, Danis-Weber classification, age, sex, body mass index (BMI), limb dominance, and mechanism of injury were reviewed to identify factors related to MCL injury...
February 22, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29470563/nonsurgical-treatment-for-posttraumatic-complete-facial-nerve-paralysis
#8
Alok Thakar, Madan P Gupta, Achal Srivastava, Deepak Agrawal, Atin Kumar
Importance: Current recommendations envisage early surgical exploration for complete facial nerve paralysis associated with temporal bone fracture and unfavorable electrophysiologic features (response to electroneuronography, <5%). However, the evidence base for such a practice is weak, with the potential for spontaneous improvement being unknown, and the expected results from alternative nonsurgical treatment also undefined. Objective: To document the results of nonsurgical treatment for posttraumatic complete facial paralysis with undisplaced temporal bone fracture and unfavorable electrophysiologic features...
February 22, 2018: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29470519/correction-management-of-vertebral-compression-fracture-in-general-practice-beach-program
#9
Rodrigo Z Megale, Allan Pollack, Helena Britt, Jane Latimer, Vasi Naganathan, Andrew J McLachlan, Manuela L Ferreira
[This corrects the article DOI: 10.1371/journal.pone.0176351.].
2018: PloS One
https://www.readbyqxmd.com/read/29470413/electrical-mechanical-monitoring-of-shape-memory-alloy-reinforcing-fibers-obtained-by-pullout-tests-in-sma-cement-composite-materials
#10
Eui-Hyun Kim, Hyunbae Lee, Jae-Hwan Kim, Seung-Muk Bae, Heesu Hwang, Heesun Yang, Eunsoo Choi, Jin-Ha Hwang
Self-healing is an essential property of smart concrete structures. In contrast to other structural metals, shape memory alloys (SMAs) offer two unique effects: shape memory effects, and superelastic effects. Composites composed of SMA wires and conventional cements can overcome the mechanical weaknesses associated with tensile fractures in conventional concretes. Under specialized environments, the material interface between the cementitious component and the SMA materials plays an important role in achieving the enhanced mechanical performance and robustness of the SMA/cement interface...
February 22, 2018: Materials
https://www.readbyqxmd.com/read/29470369/an-unusual-cause-of-an-isolated-scapula-fracture
#11
Megan Donovan, Magdy W Attia
This article reviews an isolated scapula fracture in a teenage athlete. Although rarely reported in professional athletes, scapula fracture should be included in the differential diagnosis of shoulder injuries. Proper imaging is key to effective diagnosis and management.
March 2018: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/29470237/primary-shoulder-hemiarthroplasty-what-can-be-learned-from-359-cases-that-were-surgically-revised
#12
Daniel J Hackett, Jason E Hsu, Frederick A Matsen
BACKGROUND: Primary shoulder hemiarthroplasty is used to address a range of glenohumeral disorders, including fracture, arthritis, avascular necrosis, and capsulorrhaphy arthropathy; some patients with hemiarthroplasties undergo revision surgery for persistent pain or residual shoulder dysfunction. The literature does not clarify the features of the hemiarthroplasties having repeat surgery in a way that can guide surgeons' efforts to minimize the need for revision. To help address this gap, we analyzed the characteristics of patients from our region for whom we performed surgical revision of a prior humeral hemiarthroplasty QUESTIONS/PURPOSES: (1) What are the common characteristics of shoulder hemiarthroplasties having a revision? (2) What are the common characteristics of the subset of revised shoulder hemiarthroplasties that were performed for fracture? (3) What are characteristics of the subset of all revised hemiarthroplasties that were associated with glenoid bone erosion? METHODS: Data for 983 patients for whom we performed a surgical revision of any type of shoulder arthroplasty between January 1991 and January 2017 were identified in our longitudinally maintained institutional arthroplasty revision database...
February 21, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29470236/is-the-lesser-trochanter-profile-a-reliable-means-of-restoring-anatomic-rotation-after-femur-fracture-fixation
#13
Lucas S Marchand, Dane C Todd, Patrick Kellam, Temitope F Adeyemi, David L Rothberg, Travis G Maak
BACKGROUND: Restoring normal femoral rotation is an important consideration when managing femur fractures. Femoral malrotation after fixation is common and several preventive techniques have been described. Use of the lesser trochanter profile is a simple method to prevent malrotation, because the profile changes with femoral rotation, but the accuracy of this method is unclear. QUESTIONS/PURPOSES: The purposes of this study were (1) to report the rotational profiles of uninjured femora in an adult population; and (2) to determine if the lesser trochanter profile was associated with variability in femoral rotation...
February 21, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29470231/classifications-in-brief-the-pipkin-classification-of-femoral-head-fractures
#14
Nicholas M Romeo, Reza Firoozabadi
No abstract text is available yet for this article.
February 21, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29470204/seniors-need-hip-fracture-surgery-within-24-hours
#15
Carol Potera
Early surgery found to reduce life-threatening complications.
March 2018: American Journal of Nursing
https://www.readbyqxmd.com/read/29470155/clinical-utility-of-dual-energy-ct-analysis-of-bone-marrow-edema-in-acute-wrist-fractures
#16
Ismail T Ali, William D Wong, Teresa Liang, Faisal Khosa, Memoona Mian, Sabeena Jalal, Savvas Nicolaou
OBJECTIVE: The purpose of this study is to determine the utility of dual-energy CT (DECT) for assessing carpal fractures and to obtain an attenuation value cutoff (in Hounsfield units) to identify bone marrow edema due to an acute carpal fracture. MATERIALS AND METHODS: In this retrospective study, 24 patients who presented with wrist fractures from September 3, 2014, through March 9, 2015, underwent imaging with DECT (80 and 140 kVp). Using the three-material decomposition algorithm specific for virtual noncalcium to construct images, two radiologists identified carpal fractures and associated bone marrow edema...
February 22, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29469968/first-follow-up-of-a-breakable-stent-for-implantation-in-infants-dedicated-for-a-life-long-stay
#17
Peter A Zartner, Ulrich Neudorf, Benjamin Bierbach, Chris Hart, Martin B Schneider
OBJECTIVE AND METHODS: The use of conventional metal stents in infants is severely limited by subsequent somatic growth. The use of a breakable balloon expandable stent (BS) designed for initial implant at small diameters but with properties that allow unlimited dilation in line with growth has potential advantages in this patient group. This study reports our experience with this stent between 2010 and 2014. A total of 17 BS were implanted in 14 infants (mean age 4.8 months). All but one stent was placed into the aorta to treat coarctation...
February 22, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29469803/use-of-the-hemicap-partial-hip-resurfacing-technique-for-traumatic-femoral-head-osteochondral-defects-following-obturator-hip-dislocations
#18
Varun Arora, Pierre Navarre, Mathias Russ, Max Esser
Fracture of the femoral head (OTA 31-C1.3) following anterior obturator dislocations are a challenging problem as the fractures are often communited, impacted and with loose osteochondral fragments, making surgical fixation difficult. This can result in residual articular defects if the fragments cannot be internally fixed and need be excised, predisposing to secondary osteoarthritis. Treatment options for these defects are limited, have variable results and with limited literature to guide us on outcomes due to the rarity of these injuries...
2018: SICOT-J
https://www.readbyqxmd.com/read/29469802/nail-or-plate-in-the-management-of-distal-extra-articular-tibial-fracture-what-is-better-valutation-of-outcomes
#19
Michele Bisaccia, Andrea Cappiello, Luigi Meccariello, Giuseppe Rinonapoli, Gabriele Falzarano, Antonio Medici, Cristina Ibáñez Vicente, Luigi Piscitelli, Verdiana Stano, Olga Bisaccia, Auro Caraffa
INTRODUCTION: Distal tibial fractures are the most common long bone fractures. Several studies focusing on the methods of treatment of displaced distal tibial fractures have been published. To date, locked plates, intramedullary nails and external fixation are the three most used techniques. The aim of our study was to compare intramedullary nail (IMN) and locked plate (LP) for treatment of this kind of fracture. MATERIALS AND METHODS: We collected data on 81 patients with distal tibial fractures (distance from the joint between 40 and 100 mm) and we divided into two groups: IMN and LP...
2018: SICOT-J
https://www.readbyqxmd.com/read/29469715/assessment-of-risk-and-use-of-prophylaxis-for-glucocorticoidinduced-osteoporosis-among-dermatologists-in-the-pacific-northwest-a-survey-study
#20
Eliza Notaro, Nicole Fett, Michi M Shinohara
OBJECTIVE: Exposure to even physiologic doses of glucocorticoids can reduce one's bone mass and increase risk for osteoporotic fracture. There currently exists a wide variation in clinician approach to the assessment and management of glucocorticoid-induced osteoporosis (GIO). Our objectives were to characterize Pacific Northwest dermatology providers' general practices, assessment of risk for GIO, and preferred GIO prophylaxis measures by way of survey. To identify whether knowledge deficits exist with respect to preventing and managing GIO in dermatology patients...
September 15, 2017: Dermatology Online Journal
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