keyword
MENU ▼
Read by QxMD icon Read
search

Orthopedic test

keyword
https://www.readbyqxmd.com/read/28817162/determining-when-it-is-safe-to-remove-the-external-fixator-results-from-a-survey-of-the-limb-lengthening-and-reconstruction-society
#1
Christopher A Iobst, Waleed Mohammed, Ryan Colley
Thousands of external fixators are applied for distraction osteogenesis each year. Determining when it is safe to remove the fixator can be difficult. The purpose of this study was to survey an international group of external fixation surgeons to determine their current practice patterns surrounding external fixator removal. A 10-question, open-ended survey was emailed to members of the Limb Lengthening and Reconstruction Society. Responses were recorded, and statistical analysis was performed. Pearson's chi-square test and likelihood ratio were used when indicated...
August 17, 2017: Orthopedics
https://www.readbyqxmd.com/read/28817161/biomechanical-evaluation-of-unicortical-stress-risers-of-the-proximal-humerus-associated-with-pectoralis-major-repair
#2
David J Wilson, Brian P Milam, William F Scully, Todd P Balog, Kyong S Min, Christopher S Chen, Bryant G Marchant, Edward D Arrington
Proximal humerus fracture after pectoralis major tendon repair has been recently reported. Although this complication is rare, it may be possible to decrease such risk using newer techniques for myotenodesis. This study was designed to evaluate various unicortical stress risers created at the proximal humeral metadiaphysis during myotenodesis for repair of pectoralis major ruptures. A simulated pectoralis major myotenodesis was performed using fourth-generation Sawbones (N=30). Using previously described anatomic landmarks for the tendinous insertion, 3 repair techniques were compared: bone trough, tenodesis screws, and suture anchors (N=10 each)...
August 17, 2017: Orthopedics
https://www.readbyqxmd.com/read/28811545/sealing-the-pores-of-peo-coating-with-mg-al-layered-double-hydroxide-enhanced-corrosion-resistance-cytocompatibility-and-drug-delivery-ability
#3
Feng Peng, Donghui Wang, Yaxin Tian, Huiliang Cao, Yuqin Qiao, Xuanyong Liu
In recent years, magnesium (Mg) alloys show a promising application in clinic as degradable biomaterials. Nevertheless, the poor corrosion resistance of Mg alloys is the main obstacle to their clinical application. Here we successfully seal the pores of plasma electrolytic oxidation (PEO) coating on AZ31 with Mg-Al layered double hydroxide (LDH) via hydrothermal treatment. PEO/LDH composite coating possess a two layer structure, an inner layer made up of PEO coating (~5 μm) and an outer layer of Mg-Al LDH (~2 μm)...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28801582/percutaneous-placement-of-iliosacral-screws-under-the-guidance-of-axial-view-projection-of-the-s1-pedicle-a-case-series
#4
Yingchao Yin, Zhiyong Hou, Ruipeng Zhang, Lin Jin, Wei Chen, Yingze Zhang
The aim of this study was to evaluate the safety and efficacy of percutaneous placement of iliosacral screws under the guidance of axial view projection of the S1 pedicle clinically. This case series includes 58 consecutive unstable pelvic injury patients, which were treated with iliosacral screws between July 2011 and July 2016. Patients were divided into two groups: normal sacrum (n = 31) and dysmorphic sacrum (n = 27). A single orthopedic surgeon operated on all patients, with percutaneous placement of iliosacral screws under the guidance of axial view projection of the S1 pedicle...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28801032/physiotherapy-for-patients-with-shoulder-pain-in-primary-care-a-descriptive-study-of-diagnostic-and-therapeutic-management
#5
Y H J M Karel, G G M Scholten-Peeters, M Thoomes-de Graaf, E Duijn, J B van Broekhoven, B W Koes, A P Verhagen
BACKGROUND: Shoulder pain is one of the three main musculoskeletal complaints and more than 50% of the patients have symptoms longer than 6 months. Until now, limited data exist about the content of physiotherapy for patients with shoulder pain in primary care. OBJECTIVE: Describe current physiotherapeutic diagnostic- and therapeutic management, including the use of diagnostic ultrasound, in patients with shoulder pain in primary care. DESIGN AND SETTING: A prospective cohort study in primary care physiotherapy with a 12 week follow-up...
November 28, 2016: Physiotherapy
https://www.readbyqxmd.com/read/28795018/in-vivo-fluoroscopic-kinematography-of-dynamic-radio-ulnar-incongruence-in-dogs
#6
Thomas Rohwedder, Martin Fischer, Böttcher Peter
Aim of the study was to investigate dynamic radio-ulnar incongruence (dRUI) in the canine elbow joint comparing orthopedic healthy and dysplastic dogs in a prospective in vivo study design. In 6 orthopedic sound elbow joints (5 dogs, median age 17 months & mean body weight 27.9 kg) and 7 elbow joints with medial coronoid disease (6 dogs, median age 17.5 months & mean body weight 27.6 kg) 0.8 mm Ø tantalum beads were surgically implanted into radius, ulna and humerus for dynamic radiosteriometric analysis (RSA) using high-speed biplanar fluoroscopy with the dogs walking on a treadmill...
2017: Open veterinary journal
https://www.readbyqxmd.com/read/28794175/a-comparative-genomics-study-of-staphylococcus-epidermidis-from-orthopedic-device-related-infections-correlated-with-patient-outcome
#7
Virginia Post, Llinos G Harris, Mario Morgenstern, Leonardos Mageiros, Matthew D Hitchings, Guillaume Méric, Ben Pascoe, Samuel K Sheppard, R Geoff Richards, T Fintan Moriarty
Staphylococcus epidermidis has emerged as an important opportunistic pathogen causing orthopedic device-related infections (ODRIs). This study investigated the association of genome variation and phenotypic features of the infecting S. epidermidis isolate with the clinical outcome of the infected patient. S. epidermidis isolates were collected from 104 patients with ODRI. Their clinical outcome was evaluated, after an average of 26 months, as either "cured" or "not cured". The isolates were tested for antibiotic susceptibility and biofilm formation...
August 9, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28776634/performance-and-return-to-sport-after-nonoperative-treatment-of-clavicle-fractures-in-national-football-league-players
#8
Robert A Jack, Kyle R Sochacki, Sergio M Navarro, Patrick C McCulloch, David M Lintner, Joshua D Harris
Clavicle fractures are often seen in contact sports. The purpose of this study was to determine (1) return-to-sport (RTS) rate of National Football League (NFL) players following nonoperative treatment of clavicle fractures, (2) posttreatment career length and games per season, (3) pre- and posttreatment performance, and (4) posttreatment performance compared with control players matched by position, age, years of experience, and performance. Public records were used to identify NFL players who underwent nonoperative treatment of clavicle fractures...
August 3, 2017: Orthopedics
https://www.readbyqxmd.com/read/28776630/metal-allergy-as-a-cause-of-implant-failure-in-shoulder-arthroplasty
#9
Jia-Wei Kevin Ko, Thema A Nicholson, C Edward Hoffler, Gerald Williams, Charles Getz
Metal allergy is an uncommon and poorly understood cause of failure of orthopedic implants. To the authors' knowledge, there have been no reports of the management of shoulder arthroplasty patients with metal allergy. The authors present their experience with the diagnosis and management of patients with metal allergy. Patients with metal allergy undergoing shoulder arthroplasty were identified through retrospective chart review from January 1, 2012, to January 31, 2015. Case characteristics collected included patient risk factors (age, sex, prior cutaneous reactions to metal), metal allergy factors (type of metal allergy, method of diagnosis), and surgery factors (implant type, primary/revision, type of shoulder arthroplasty)...
August 3, 2017: Orthopedics
https://www.readbyqxmd.com/read/28774080/the-effect-of-uv-treatment-on-the-osteoconductive-capacity-of-zirconia-based-materials
#10
Miha Brezavšček, Ahmed Fawzy, Maria Bächle, Taskin Tuna, Jens Fischer, Wael Att
OBJECTIVE: Improvements in the bioactivity of zirconia implants for accelerated healing and reduced morbidity have been of continuing interest in the fields of dentistry and orthopedic surgery. The aim of the present study was to examine whether UV treatment increases the osteoconductivity of zirconia-based materials. MATERIALS AND METHODS: Smooth and rough zirconia-based disks and cylindrical implants were treated with UV light for 15 min and subsequently placed in rat femurs...
November 24, 2016: Materials
https://www.readbyqxmd.com/read/28773055/phenolic-modified-ceramic-coating-on-biodegradable-mg-alloy-the-improved-corrosion-resistance-and-osteoblast-like-cell-activity
#11
Hung-Pang Lee, Da-Jun Lin, Ming-Long Yeh
Magnesium alloys have great potential for developing orthopedic implants due to their biodegradability and mechanical properties, but the rapid corrosion rate of the currently-available alloys limits their clinical applications. To increase the corrosion resistance of the substrate, a protective ceramic coating is constructed by a micro-arc oxidation (MAO) process on ZK60 magnesium alloy. The porous ceramic coating is mainly composed of magnesium oxide and magnesium silicate, and the results from cell cultures show it can stimulate osteoblastic cell growth and proliferation...
June 25, 2017: Materials
https://www.readbyqxmd.com/read/28773046/characterization-and-in-vitro-and-in-vivo-assessment-of-a-novel-cellulose-acetate-coated-mg-based-alloy-for-orthopedic-applications
#12
Patricia Neacsu, Adela Ioana Staras, Stefan Ioan Voicu, Iuliana Ionascu, Teodoru Soare, Seralp Uzun, Vasile Danut Cojocaru, Andreea Madalina Pandele, Sorin Mihai Croitoru, Florin Miculescu, Cosmin Mihai Cotrut, Ioan Dan, Anisoara Cimpean
Despite their good biocompatibility and adequate mechanical behavior, the main limitation of Mg alloys might be their high degradation rates in a physiological environment. In this study, a novel Mg-based alloy exhibiting an elastic modulus E = 42 GPa, Mg-1Ca-0.2Mn-0.6Zr, was synthesized and thermo-mechanically processed. In order to improve its performance as a temporary bone implant, a coating based on cellulose acetate (CA) was realized by using the dipping method. The formation of the polymer coating was demonstrated by FT-IR, XPS, SEM and corrosion behavior comparative analyses of both uncoated and CA-coated alloys...
June 22, 2017: Materials
https://www.readbyqxmd.com/read/28772717/rgdc-peptide-induced-biomimetic-calcium-phosphate-coating-formed-on-az31-magnesium-alloy
#13
Lin Cao, Lina Wang, Lingying Fan, Wenjun Xiao, Bingpeng Lin, Yimeng Xu, Jun Liang, Baocheng Cao
Magnesium alloys as biodegradable metal implants have received a lot of interest in biomedical applications. However, magnesium alloys have extremely high corrosion rates a in physiological environment, which have limited their application in the orthopedic field. In this study, calcium phosphate compounds (Ca-P) coating was prepared by arginine-glycine-aspartic acid-cysteine (RGDC) peptide-induced mineralization in 1.5 simulated body fluid (SBF) to improve the corrosion resistance and biocompatibility of the AZ31 magnesium alloys...
March 28, 2017: Materials
https://www.readbyqxmd.com/read/28772697/calcium-phosphate-bioceramics-a-review-of-their-history-structure-properties-coating-technologies-and-biomedical-applications
#14
REVIEW
Noam Eliaz, Noah Metoki
Calcium phosphate (CaP) bioceramics are widely used in the field of bone regeneration, both in orthopedics and in dentistry, due to their good biocompatibility, osseointegration and osteoconduction. The aim of this article is to review the history, structure, properties and clinical applications of these materials, whether they are in the form of bone cements, paste, scaffolds, or coatings. Major analytical techniques for characterization of CaPs, in vitro and in vivo tests, and the requirements of the US Food and Drug Administration (FDA) and international standards from CaP coatings on orthopedic and dental endosseous implants, are also summarized, along with the possible effect of sterilization on these materials...
March 24, 2017: Materials
https://www.readbyqxmd.com/read/28772412/biocompatibility-and-inflammatory-potential-of-titanium-alloys-cultivated-with-human-osteoblasts-fibroblasts-and-macrophages
#15
Jana Markhoff, Martin Krogull, Christian Schulze, Christian Rotsch, Sandra Hunger, Rainer Bader
The biomaterials used to maintain or replace functions in the human body consist mainly of metals, ceramics or polymers. In orthopedic surgery, metallic materials, especially titanium and its alloys, are the most common, due to their excellent mechanical properties, corrosion resistance, and biocompatibility. Aside from the established Ti6Al4V alloy, shape memory materials such as nickel-titanium (NiTi) have risen in importance, but are also discussed because of the adverse effects of nickel ions. These might be reduced by specific surface modifications...
January 10, 2017: Materials
https://www.readbyqxmd.com/read/28767180/improved-union-and-bone-strength-in-a-mouse-model-of-nf1-pseudarthrosis-treated-with-recombinant-human-bone-morphogenetic-protein-2-and-zoledronic-acid
#16
Nikita Deo, Tegan L Cheng, Kathy Mikulec, Lauren Peacock, David G Little, Aaron Schindeler
Tibial pseudarthrosis associated with Neurofibromatosis type 1 (NF1) is an orthopedic condition with consistently poor clinical outcomes. Using a murine model that features localized double inactivation of the Nf1 gene in an experimental tibial fracture, we tested the effects of recombinant human bone morphogenetic protein-2 (rhBMP-2) and/or the bisphosphonate zoledronic acid (ZA). Tibiae were harvested at 3 weeks for analysis, at which time there was negligible healing in un-treated control fractures (7% union)...
August 2, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28764530/oscillatory-device-for-use-with-linear-tribometer-for-tribological-evaluation-of-biomaterials
#17
J N Athayde, C J M Siqueira, N K Kuromoto, H N Cambraia
Orthopedic implants still have limitations regarding their durability, despite being in use for over fifty years. Particles arising from wear due to the relative motion of their surfaces remain responsible for aseptic failure. This paper presents a device to be coupled with a reciprocal linear tribometer to reproduce the ex vivo wear of biomaterials, allowing the measurement of force and coefficient of friction. The device consists of a structure connected to the tribometer that transforms its reciprocal linear motion into one that is oscillatory for the mechanical assembly that contains the samples to test the desired biomaterials...
July 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28762893/overlapping-microrna-expression-in-saliva-and-cerebrospinal-fluid-accurately-identifies-pediatric-traumatic-brain-injury
#18
Steven Daniel Hicks, Jeremiah Johnson, Molly C Carney, Harry Bramley, Robert P Olympia, Andrea C Loeffert, Neal J Thomas
Objectives To assess the accuracy and physiologic relevance of circulating microRNA (miRNA) as a biomarker of pediatric concussion, we compared changes in salivary miRNA and cerebrospinal fluid (CSF) miRNA following childhood traumatic brain injury (TBI). Study Design A case-cohort design was used to compare longitudinal miRNA concentrations in CSF of seven children with severe TBI against three controls without TBI. The miRNAs "altered" in CSF were interrogated in saliva of 60 children with mild TBI and compared with 18 age- and gender- matched controls...
August 1, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28757828/comparison-of-infracondylar-versus-subsartorial-approach-to-saphenous-nerve-block-a-randomized-controlled-study
#19
L Sahin, M L Eken, M Isik, O Cavus
BACKGROUND AND OBJECTIVES: Only a few different approaches are currently utilized for saphenous nerve block. Our study aimed to compare two different ultrasound (US)-guided saphenous nerve blocks and designed this study to test the hypothesis that the medial infracondylar approach has more success rate than the subsartorial approach applied in saphenous nerve blockage. METHODS: The study included 76 patients (18-65 years old) with the American Society of Anesthesiologists physical status of I-III, who were scheduled for below-knee surgery by the orthopedics clinic...
July 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28756566/pten-hamartoma-of-the-soft-tissue-the-initial-manifestation-of-an-underlying-pten-hamartoma-tumor-syndrome-in-a-4-year-old-female
#20
Charles B Chism, Lindsay Crawford, Amanda Tchakarov, Alyaa Al-Ibraheemi, Nicholas M Beckmann
A 4-year-old female was referred to pediatric orthopedic surgery for left leg pain and limping for 3 months following a motor vehicle collision. Recently, the patient's mother had noted left knee swelling and dragging of the left leg when walking. Past medical history was significant for hip dysplasia with slight leg length discrepancy. The patient was otherwise healthy. Physical examination was remarkable for left pre-patellar soft tissue fullness with normal range of motion. There was no warmth or tenderness...
July 29, 2017: Skeletal Radiology
keyword
keyword
2320
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"