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https://www.readbyqxmd.com/read/28107676/characterization-of-a-new-ultrasound-device-designed-for-measuring-cortical-porosity-at-the-human-tibia-a-phantom-study
#1
M Gräsel, C-C Glüer, R Barkmann
Quantitative ultrasound (QUS) measurements of trabecular bone are a useful tool for the assessment of osteoporotic fracture risk. However, cortical bone properties (e.g. porosity) have an impact on bone strength as well and thus current research is focused on QUS assessment of cortical bone properties. Simulation studies of ultrasound propagation through cortical bone indicate that anisotropy, calculated from the ratio of the velocities in axial and tangential directions, is correlated with porosity. However, this relationship is affected by error sources, specifically bone surface curvature and variability of probe positioning...
January 4, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28105092/serum-n-terminal-telopeptide-of-type-i-collagen-as-an-early-marker-of-fracture-nonunion-in-rabbits
#2
Jian-Ping Lin, Zhan-Jun Shi, Ning-Jiang Shen, Jian Wang, Zao-Min Li, Jun Xiao
The aim of the present study was to establish an experimental animal model of fracture nonunion, and to investigate the changes in serum biomarker concentrations in fracture nonunion. A total of 20 purebred New Zealand rabbits were divided into two group: A bone defect group and a bone fracture group. In the bone defect group, a 15-mm section of bone (including the periosteum) was removed from the mid-radius, and the medullary cavities were closed with bone wax. In the bone fracture group, the mid-radius was fractured...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28089796/correlationbetweenobesity-and-severity-of-distal-radius-fractures
#3
Carlos Acosta-Olivo, Juan C Gonzalez-Saldivar, Gregorio Villarreal-Villarreal, Alejandro Torres-Botello, Eduardo Gomez-Garcia, Yadira Tamez-Mata, Victor Peña-Martinez
INTRODUCTION: The incidence of obesity has increased significantly worldwide. Our hypothesis was that patients with obesity have a more severe distal radius fracture andwe realized a study to evaluate this correlation between obesity and severity of distal radius fractures caused by low-energy injuries. MATERIALS AND METHODS: A total of 114 patients with distal radius fracture were examined in a cross-sectional, observational study. Fractures were classified according to the international AO-Müller/Orthopedic Trauma Association (AO/OTA) classification in order to determine the severity...
January 9, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28089163/fragment-specific-fixation-versus-volar%C3%A2-locking-plates-in-primarily-nonreducible-or-secondarily-redisplaced%C3%A2-distal-radius-fractures-a%C3%A2-randomized-controlled-study
#4
Marcus Landgren, Antonio Abramo, Mats Geijer, Philippe Kopylov, Magnus Tägil
PURPOSE: To compare the patient-reported, clinical, and radiographic outcome of 2 methods of internal fixation in distal radius fractures. METHODS: Fifty patients, mean age 56 years (range, 21-69 years) with primarily nonreducible or secondarily redisplaced distal radius fractures were randomized to open reduction internal fixation using volar locking plates (n = 25) or fragment-specific fixation (n = 25). The patients were assessed on grip strength, range of motion, patient-reported outcome (Quick Disabilities of the Arm, Shoulder, and Hand), pain (visual analog scale), health-related quality of life (Short Form-12 [SF-12]), and radiographic evaluation...
January 11, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28088646/bone-microarchitecture-in-adolescent-boys-with-autism-spectrum-disorder
#5
Ann M Neumeyer, Natalia Cano Sokoloff, Erin McDonnell, Eric A Macklin, Christopher J McDougle, Madhusmita Misra
BACKGROUND: Boys with autism spectrum disorder (ASD) have lower areal bone mineral density (aBMD) than typically developing controls (TDC). Studies of volumetric BMD (vBMD) and bone microarchitecture provide information about fracture risk beyond that provided by aBMD but are currently lacking in ASD. OBJECTIVES: To assess ultradistal radius and distal tibia vBMD, bone microarchitecture and strength estimates in adolescent boys with ASD compared to TDC. DESIGN/METHODS: Cross-sectional study of 34 boys (16 ASD, 18 TDC) that assessed (i) aBMD at the whole body (WB), WB less head (WBLH), hip and spine using dual X-ray absorptiometry (DXA), (ii) vBMD and bone microarchitecture at the ultradistal radius and distal tibia using high-resolution peripheral quantitative CT (HRpQCT), and (iii) bone strength estimates (stiffness and failure load) using micro-finite element analysis (FEA)...
January 11, 2017: Bone
https://www.readbyqxmd.com/read/28074671/effect-of-illusory-kinesthesia-on-hand-function-in-patients-with-distal-radius-fractures-a-quasi-randomized-controlled-study
#6
Ryota Imai, Michihiro Osumi, Tomoya Ishigaki, Shu Morioka
OBJECTIVES: We investigated the effects of the illusion of motion through tendon vibration on hand function in patients with distal radius fractures. SETTING: Kawachi General Hospital, Japan. SUBJECTS: A total of 22 patients with distal radius fractures were divided into either an illusory kinesthesia group ( n = 11) or a control group ( n = 11). INTERVENTION: We performed the intervention for seven consecutive days after surgery...
January 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28070676/-upper-extremity-fractures-in-the-elderly
#7
Roland Biber, S Grüninger, H J Bail
Upper extremity fractures in the elderly are very frequent and second only to hip fractures in the group of fragility fractures. Their impact on mobility and functional decline seems to be underestimated especially when they occur in combination with lower extremity fractures. Fractures of the proximal humerus and the distal radius can often be treated conservatively; however, the indications for operative treatment must not be based on fracture morphology alone and due consideration should be given to all concomitant circumstances affecting functional aspects of patients...
January 2017: Zeitschrift Für Gerontologie und Geriatrie
https://www.readbyqxmd.com/read/28069517/fast-estimation-of-colles-fracture-load-of-the-distal-section-of-the-radius-by-homogenized-finite-element-analysis-based-on-hr-pqct
#8
Hadi S Hosseini, Andreas Dünki, Jonas Fabech, Martin Stauber, Nicolas Vilayphiou, Dieter Pahr, Michael Pretterklieber, Jasmin Wandel, Bert van Rietbergen, Philippe K Zysset
Fractures of the distal section of the radius (Colles' fractures) occur earlier in life than other osteoporotic fractures. Therefore, they can be interpreted as a warning signal for later, more deleterious fractures of vertebral bodies or the femoral neck. In the past decade, the advent of HR-pQCT allowed a detailed architectural analysis of the distal radius and an automated but time-consuming estimation of its strength with linear micro-finite element (μFE) analysis. Recently, a second generation of HR-pQCT scanner (XtremeCT II, SCANCO Medical, Switzerland) with a resolution beyond 61 μm became available for even more refined biomechanical investigations in vivo...
January 7, 2017: Bone
https://www.readbyqxmd.com/read/28064062/effects-of-heat-on-cut-mark-characteristics
#9
Lukas Waltenberger, Holger Schutkowski
Cut marks on bones provide crucial information about tools used and their mode of application, both in archaeological and forensic contexts. Despite a substantial amount of research on cut mark analysis and the influence of fire on bones (shrinkage, fracture pattern, recrystallisation), there is still a lack of knowledge in cut mark analysis on burnt remains. This study provides information about heat alteration of cut marks and whether consistent features can be observed that allow direct interpretation of the implemented tools used...
December 21, 2016: Forensic Science International
https://www.readbyqxmd.com/read/28060177/influence-of-insurance-type-on-the-access-to-pediatric-care-for-children-with-distal-radius-torus-fractures
#10
Harrison Potak, Christopher A Iobst
BACKGROUND: Previous literature has demonstrated that pediatric orthopaedic patients with private insurance have less difficulty obtaining appointments than those with Medicaid. Not all injuries of an orthopaedic nature, however, require specialist care. This study evaluated the willingness of pediatricians to provide care for minor orthopaedic injuries and whether or not the patient's insurance status influenced the decision to provide care. METHODS: Ninety-nine pediatric primary care offices were randomly selected from 2 regions in Florida...
January 5, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28058967/the-value-of-computed-tomography-in-detecting-distal-radio-ulnar-joint-instability-after-a-distal-radius-fracture
#11
R H van Leerdam, M M E Wijffels, M Reijnierse, W Stomp, P Krijnen, I B Schipper
: This study evaluated the value of computed tomography scans for the diagnosis of distal radioulnar joint instability. A total of 46 patients, conservatively treated for a unilateral distal radius fracture, were evaluated. Clinical instability was tested using the stress test and clunk test. A computed tomography scan of both wrists was performed in pronation and supination. Two independent observers reviewed the computed tomography scans using: the radioulnar line, subluxation ratio, epicentre and radioulnar ratio methods...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28057101/-complications-of-open-reduction-and-internal-fixation-versus-external-fixation-for-unstable-distal-radius-fractures-a-meta-analysis
#12
Z Yang, Z Z Yuan, J X Ma, X L Ma
Objective: To make a systematic assessment of the complications of open reduction and internal fixation versus external fixation for unstable distal radius fractures. Method: A computer-based online search of PubMed, ScienceDirect, EMBASE, BIOSIS, Springer and Cochrane Library were performed.The randomized and controlled trials of open reduction and internal fixation versus external fixation for unstable distal radius fractures were collected.The included trials were screened out strictly based on the criterion of inclusion and exclusion...
December 20, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28052831/orthogonal-plate-fixation-with-corrective-osteotomy-for-treatment-of-distal-radius-fracture-malunion
#13
Michael P Gaspar, Jenniefer Y Kho, Patrick M Kane, Hesham M Abdelfattah, Randall W Culp
PURPOSE: To report outcomes of patients with distal radius fracture malunions treated with corrective osteotomy and orthogonal volar and radial "90-90" plate fixation. METHODS: We performed a retrospective review of all patients who underwent distal radius corrective osteotomy and 90-90 fixation from January 2008 through December 2014. Demographic data, injury history, prior treatments, and clinical examination values were recorded. Preoperative radiographic measurements were used to classify the type and severity of deformity...
January 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28042272/assessment-of-the-role-of-cross-section-on-fatigue-resistance-of-rotary-files-when-used-in-reciprocation
#14
Vadhana Sekar, Ranjith Kumar, Suresh Nandini, Suma Ballal, Natanasabapathy Velmurugan
OBJECTIVE: The purpose of this study was to assess the role of cross section on cyclic fatigue resistance of One Shape, Revo-S SU, and Mtwo rotary files in continuous rotation and reciprocating motion in dynamic testing model. MATERIALS AND METHODS: A total of 90 new rotary One Shape, Revo-S SU, and Mtwo files (ISO size 25, taper 0.06, length 25 mm) were subjected to continuous rotation or reciprocating motion. A cyclic fatigue testing device was fabricated with 60° angle of curvature and 5 mm radius...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/28040085/upper-limb-non-unions-treated-with-bmp-7-efficacy-and-clinical-results
#15
Rahul Singh, Sabri Bleibleh, Nikolaos K Kanakaris, Peter V Giannoudis
The management of upper limb non-unions can be challenging and often with unpredictable outcomes. In this study we present our experience with the use of BMP-7 in the treatment of upper limb non-unions. Between 2004 and 2011 all consecutive patients who were treated with BMP-7 were followed up prospectively until fracture union. Fracture union was assessed with regular radiological and clinical assessment. At the final follow up clinical assessment included the short Disabilities of the Arm, Shoulder and Hand (DASH) score...
December 2016: Injury
https://www.readbyqxmd.com/read/28040075/results-of-geriatric-distal-radius-fractures-treated-by-intramedullary-fixation
#16
Steffi S I Falk, Thomas Mittlmeier, Georg Gradl
INTRODUCTION: Distal radius fracture are common injuries but no gold standard for their therapy exists. The aim of this study was to evaluate the quality of fracture care in distal radius fractures using an intramedullary implant (Targon DR interlocking nail). The nail had been developed to minimize the surgical exposure, increase fixation strength, to prevent tendon irritations and to allow for a fast return to activity. PATIENTS AND METHODS: Prospective study reports the result of 43 patients with an age over 70 years (range 70-91 years) treated by closed reduction and intramedullary fixation...
December 2016: Injury
https://www.readbyqxmd.com/read/28040073/fixation-of-intra-articular-fractures-of-the-distal-radius-using-intramedullary-nailing-a-randomized-trial-versus-palmar-locking-plates
#17
Gertraud Gradl, Steffi Falk, Thomas Mittlmeier, Martina Wendt, Nadja Mielsch, Georg Gradl
BACKGROUND: Proposed benefits of intramedullary techniques include limited soft tissue dissection while affording sufficient stability to allow early wrist motion. The primary null hypothesis of this randomized trial was that there is no significant difference with respect to functional outcome, pain and disability between patients treated with either 2.4-mm volar locking plate fixation or intramedullary nail fixation of intra-articular fractures of the distal radius. METHODS: We conducted a single-centre, prospective randomized matched-pairs trial...
December 2016: Injury
https://www.readbyqxmd.com/read/28039046/bone-quality-assessment-as-measured-by-trabecular-bone-score-in-patients-with-end-stage-renal-disease-on-dialysis
#18
Maria P Yavropoulou, Vasilios Vaios, Maria Pikilidou, Ioannis Chryssogonidis, Melina Sachinidou, Symeon Tournis, Konstantinos Makris, Kalliopi Kotsa, Michalis Daniilidis, Afroditi Haritanti, Vassilios Liakopoulos
Patients with end-stage renal disease (ESRD) on maintenance hemodialysis (HD) exhibit osteoporosis and increased fracture risk. Dual-energy X-ray absorptiometry scan measurements and calculation of fracture risk assessment toll score underestimate fracture risk in these patients and do not estimate bone quality. Trabecular bone score (TBS) has been recently proposed as an indirect measure of bone microarchitecture. In this study, we investigated alterations of bone quality in patients with ESRD on HD, using TBS...
December 27, 2016: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28038900/validation-of-the-quickdash-and-dash-in-patients-with-distal-radius-fractures-through-agreement-analysis
#19
Philemon Tsang, David Walton, Ruby Grewal, Joy MacDermid
OBJECTIVE: To examine the agreement of scores between the Disability of Arm, Shoulder and Hand (DASH) and QuickDASH Questionnaires in patients with distal radius fractures (DRF) and their score's concurrent validity with PRWE scores. DESIGN: Validity Study SETTING: Hand and upper limb clinic PARTICIPANTS: One hundred and seventy-seven patients with Distal Radius Fractures over the age of 18 were included in this study. INTERVENTIONS: N/A MAIN OUTCOME MEASURES: Measurements of the DASH, QuickDASH, and Patient Reported Wrist Evaluation (PRWE) were taken at baseline and 1-year follow-up...
December 27, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28033150/complex-distal-radius-fractures-an-anatomic-algorithm-for-surgical-management
#20
Peter Charles Rhee, Robert J Medoff, Alexander Y Shin
Most distal radius fractures result from low-energy mechanisms and can be successfully treated nonsurgically or with a variety of surgical techniques if indicated. High-energy distal radius fractures can involve extensive comminution or bone loss with concomitant ligament, soft-tissue, and neurovascular injuries. In patients with complex distal radius fractures, reconstruction of the distal radius, ulna, and triangular fibrocartilage complex can be challenging. Effective restoration of the bony architecture requires intimate knowledge of the anatomy of the distal radius, a thorough understanding of the goals of treatment, versatility in surgical approaches, and familiarity with multiple fixation options...
February 2017: Journal of the American Academy of Orthopaedic Surgeons
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