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https://www.readbyqxmd.com/read/29332195/histomorphometry-and-cortical-robusticity-of-the-adult-human-femur
#1
Justyna Jolanta Miszkiewicz, Patrick Mahoney
Recent quantitative analyses of human bone microanatomy, as well as theoretical models that propose bone microstructure and gross anatomical associations, have started to reveal insights into biological links that may facilitate remodeling processes. However, relationships between bone size and the underlying cortical bone histology remain largely unexplored. The goal of this study is to determine the extent to which static indicators of bone remodeling and vascularity, measured using histomorphometric techniques, relate to femoral midshaft cortical width and robusticity...
January 13, 2018: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29331937/quasi-static-tensile-properties-of-the-cranial-cruciate-ligament-crcl-in-adult-cattle-towards-the-design-of-a-prosthetic-crcl
#2
Lucien Diotalevi, Yvan Petit, Vladimir Brailovski, Sylvain Nichols, Emma Marchionatti, Éric Wagnac
Mechanical properties of the Cranial Cruciate Ligament (CrCL) in adult cattle are not well documented and protocols used in the literature focus on testing a full femur-CrCL-tibia complex rather than an isolated CrCL. The aim of this study was to assess a wider range of tensile properties of the CrCL along its anatomic axis with experimental measurements of the global elongation, displacement and strain fields, in order to provide guidelines for the design of CrCL prosthetic surrogates. Fourteen bovine CrCL were harvested from seven mature cows (5...
December 26, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29331714/stature-estimation-formulae-for-mexican-contemporary-population-a-sample-based-study-of-long-bones
#3
Antinea Menéndez Garmendia, Gabriela Sánchez-Mejorada, Jorge A Gómez-Valdés
Stature estimation is an important step to create a biological profile for human identification of unknown individuals in forensic anthropological practice, and it is well known that the long bone length is highly correlated with this feature. The purpose of the present study is to develop formulae for height estimation, based on simple linear regression model for humerus, femur and tibia in Mexican contemporary population. Stature was taken in 56 males and 30 female corpses as well as maximum length of three long bones of the limbs after autopsy following the Menéndez et al...
January 3, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29331300/cigarette-smoking-and-hip-volumetric-bone-mineral-density-and-cortical-volume-loss-in-older-adults-the-ages-reykjavik-study
#4
Elisa A Marques, Martine Elbejjani, Vilmundur Gudnason, Gunnar Sigurdsson, Thomas Lang, Sigurdur Sigurdsson, Thor Aspelund, Kristin Siggeirsdottir, Lenore Launer, Gudny Eiriksdottir, Tamara B Harris
This study aimed to explore the relationships of several indicators of cigarette smoking habits (smoking status, pack-years, age at smoking initiation and smoking cessation) with quantitative computed tomographic (QCT)-derived proximal femur bone measures (trabecular vBMD, integral vBMD and the ratio of cortical to total tissue volume (cvol/ivol)) and with subsequent change in these measures over the next five years. A total of 2673 older adults (55.9% women), aged 66-92 years at baseline from the Age, Gene/Environment Susceptibility (AGES)-Reykjavik Study, who had two QCT scans of the hip were studied...
January 10, 2018: Bone
https://www.readbyqxmd.com/read/29331010/implants-for-extracapsular-neck-of-femur-fracture-dynamic-hip-screw-versus-intramedullary-nailing
#5
Faisal Farooq Butt, Adnan Shabbair Hussain, Ahmed Mushtaq Khan, Maria Sultan
Neck of femur fractures are the most prevalent type of injury in elderly trauma patients. Both intra and extra capsular type of fractures are equally distributed in the given population. Traditionally, Extra capsular fractures are fixed with Dynamic Hip screw or Intra medullary nailing based on the type of fracture. NICE (National Institute of Clinical Excellence) recommends fixing 31-A1 and 31-A2 fractures with DHS (Dynamic Hip Screw) whereas AO recommends fixing 31-A1 with DHS and 31-A2.1 subtype with DHS and 31-A2...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29330634/corrective-osteotomies-using-patient-specific-3d-printed-guides-a-critical-appraisal
#6
Wouter Rosseels, Michiel Herteleer, An Sermon, Stefaan Nijs, Harm Hoekstra
INTRODUCTION: Over the last decade, the technique of 3D planning has found its way into trauma surgery. The use of this technique in corrective osteotomies for treatment of malunions provides the trauma surgeon with a powerful tool. However, this technique is not entirely straightforward. We aimed to define potential pitfalls of this technique and possible solutions to overcome these shortcomings. MATERIALS AND METHODS: Ten patients with either a uni-, bi- or triplanar malunion of the long bones were included in this study...
January 12, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29329888/associations-between-cartilage-proteoglycan-density-and-patient-outcomes-12months-following-anterior-cruciate-ligament-reconstruction
#7
Brian Pietrosimone, Daniel Nissman, Darin A Padua, J Troy Blackburn, Matthew S Harkey, Robert A Creighton, Ganesh M Kamath, Kaitlin Healy, Randy Schmitz, Jeffrey B Driban, Steve W Marshall, Joanne M Jordan, Jeffrey T Spang
BACKGROUND: Lower proteoglycan density (PGD) of the articular cartilage may be an early marker of osteoarthritis following anterior cruciate ligament (ACL) reconstruction (ACL-R). The purpose this study was to determine associations between the Knee Injury and Osteoarthritis Outcomes Score (KOOS) and PGD of the articular cartilage in the femur and tibia 12-months following ACL-R. METHODS: We evaluated KOOS pain, symptoms, function in activities of daily living (ADL), function in sport and recreation (Sport), and quality of life (QOL), as well as PGD using T1rho magnetic resonance imaging in 18 individuals 12...
January 9, 2018: Knee
https://www.readbyqxmd.com/read/29329171/nonhuman-primate-rhesus-macaque-models-of-severe-pressure-targeted-hemorrhagic-and-polytraumatic-hemorrhagic-shock
#8
Forest R Sheppard, Antoni R Macko, Jacob J Glaser, Philip J Vernon, Alexander J Burdette, Ruth Madelaine Paredes, Craig A Koeller, Anthony E Pusateri, Douglas K Tadaki, Sylvain Cardin
BACKGROUND: We endeavored to develop clinically translatable nonhuman primate (NHP) models of severe polytraumatic hemorrhagic shock. METHODS: NHPs were randomized into five severe pressure-targeted hemorrhagic shock (PTHS) ± additional injuries scenarios: 30-min PTHS (PTHS-30), 60-min PTHS (PTHS-60), PTHS-60 + soft tissue injury (PTHS-60+ST), PTHS-60+ST + femur fracture (PTHS-60+ST+FF), and decompensated PTHS+ST+FF (PTHS-D). Physiologic parameters were recorded and blood samples collected at five time points with animal observation through T = 24 h...
February 2018: Shock
https://www.readbyqxmd.com/read/29328886/osteochondral-graft-size-is-significantly-associated-with-increased-force-and-decreased-chondrocyte-viability
#9
Brian E Walczak, Matthew S Nies, Darrin J Trask, Scott Hetzel, Patrick J Roney, Matthew W Squire, Geoffrey S Baer
BACKGROUND: Insertion force has been shown to significantly reduce chondrocyte viability during osteochondral allograft transplantation. How graft size influences the required insertion force and chondrocyte viability has yet to be determined. Hypothesis/Purpose: The purpose was to characterize how graft size influences insertion force requirements and chondrocyte viability during osteochondral transplantation. The hypothesis was that larger grafts would require greater force and reduce chondrocyte viability...
January 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29328790/hospital-stay-and-blood-transfusion-in-elderly-patients-with-hip-fractures
#10
Efthymios Iliopoulos, Sohail Yousaf, Hazel Watters, Arshad Khaleel
Neck of femur (NOF) fractures in elderly patients are the most frequent condition which an orthopaedic surgeon confronts nowadays. The incidence of these fractures is increasing as the population continues to age. These patients absorb the majority of the resources in the hospitals, as their healthcare demands are increased. This study included all patients who were admitted to our hospital between January and October 2015 following a neck of femur fracture. A total of 336 patients were included (72.3% female)...
December 2017: Journal of Perioperative Practice
https://www.readbyqxmd.com/read/29327129/quantification-of-osteoblastic-activity-in-epiphyseal-growth-plates-by-quantitative-bone-spect-ct
#11
Tomohiko Yamane, Ichiei Kuji, Akira Seto, Ichiro Matsunari
OBJECTIVE: Quantifying the function of the epiphyseal plate is worthwhile for the management of children with growth disorders. The aim of this retrospective study was to quantify the osteoblastic activity at the epiphyseal plate using the quantitative bone SPECT/CT. MATERIALS AND METHODS: We enrolled patients under the age of 20 years who received Tc-99m hydroxymethylene diphosphonate bone scintigraphy acquired by a quantitative SPECT/CT scanner. The images were reconstructed by ordered subset conjugate-gradient minimizer, and the uptake on the distal margin of the femur was quantified by peak standardized uptake value (SUVpeak)...
January 11, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29327108/computed-tomography-for-occult-fractures-of-the-proximal-femur-pelvis-and-sacrum-in-clinical-practice-single-institution-dual-site-experience
#12
Jacob C Mandell, Michael J Weaver, Bharti Khurana
PURPOSE: The purpose of this study was to evaluate the diagnostic performance of CT for assessment of occult fractures of the proximal femur, pelvis, and sacrum. MATERIALS AND METHODS: A retrospective review was performed on patients who received a CT of the hip or pelvis for suspected occult fracture after negative or equivocal radiographs performed within 24 h. The official radiology report was utilized for the determination of CT findings and calculation of sensitivity and specificity...
January 11, 2018: Emergency Radiology
https://www.readbyqxmd.com/read/29326764/a-prospective-study-to-evaluate-the-management-of-sub-trochanteric-femur-fractures-with-long-proximal-femoral-nail
#13
M Kumar, V Akshat, A Kanwariya, M Gandhi
Introduction: Sub-trochanteric fractures of the femur remains one of the most challenging fractures faced by orthopaedic surgeons. This study was done to analyse the management and complications of sub-trochanteric fractures using long proximal femoral nail (PFN). Materials and Methods: This was a prospective study of 50 patients with sub-trochanteric fractures of femur who were treated with long PFN at a tertiary care center from July 2012 to June 2016. The fractures were classified according to Seinsheimer classification...
November 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29326763/incidence-of-varus-malalignment-post-interlocking-nail-in-proximal-femur-shaft-fractures-comparing-two-types-of-entry-points
#14
A N Sadagatullah, M N Nazeeb, S Ibrahim
Introduction: Osteosynthesis of the femur using an interlocking nail is the gold standard for treating diaphyseal fractures of the femur. There are two established entry points for the antegrade interlocking nails which is the piriformis fossa or the greater trochanter. It has been reported that varus malalignment was frequently seen in proximal femur fracture which were treated with interlocking nail utilizing the greater trochanter entry point. The study was done to find out if the problem was of significance...
November 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29326508/effect-of-ultraviolet-irradiation-on-the-osseointegration-of-a-titanium-alloy-with-bone
#15
Ashish Yadav, Ranjana Yadav, Aratee Gupta, Akash Baranwal, Atul Bhatnagar, Vakil Singh
Introduction: Attempt has been made to analyze the potential of titanium (Ti) alloy for osteointegration by the effect of surface photo functionalization in different aspects as follows: in Ringer's solution, in vitro cell growth, and in vivo study on rabbit. The present study was aimed to investigate the influence of ultraviolet (UV) light on surface topography, corrosion behavior, and bioactivity of indigenously manufactured samples of Ti alloy mini-implant. Materials and Methods: The study includes surface modification of Ti samples by UV treatment, corrosion testing of the specimens using Potentiostat (GAMRY System), qualitative examination of modified surface topography using scanning electron microscope, and cellular viability test on Ti alloy surface (3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide ASSAY)...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29326134/evaluation-of-estrogenic-potential-by-herbal-formula-hpc-03-for-in-vitro-and-in-vivo
#16
Bo Yoon Chang, Dae Sung Kim, Hye Soo Kim, Sung Yeon Kim
HPC 03 is herbal formula that consists of extracts from Angelica gigas, Cnidium officinale Makino and Cinnamomum cassia Presl. The present study evaluated the estrogenic potential of HPC 03 by using in vitro and in vivo models. The regulatory mechanisms of HPC 03 in estrogen-dependent MCF-7 cells were assessed. HPC 03 induced the proliferation of estrogen receptor-positive MCF-7 cells, and the proliferation was blocked by the addition of the estrogen antagonist tamoxifen. The estrogen receptorα/β luciferase activities were significantly increased by HPC 03 treatment, which also increased the mRNA expression of the estrogen-responsive genes Psen2, Pgr and Ctsd Also, we evaluated the ameliorative effects of HPC 03 on menopausal symptoms in ovariectomized rats...
February 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29325837/outcomes-of-total-knee-arthroplasty-in-degenerative-osteoarthritic-knee-with-genu-recurvatum
#17
Seung-Suk Seo, Chang-Wan Kim, Chang-Rack Lee, Jin-Hyuk Seo, Do-Hun Kim, Ok-Gul Kim
BACKGROUND: This study aimed to assess the incidence of genu recurvatum without neuromuscular disorders in knees that underwent navigation-assisted total knee arthroplasty (TKA), to evaluate short-term radiologic and clinical results of navigation-assisted TKA in genu recurvatum, and to evaluate differences in results according to the degree of pre-operative hyperextension and type of implant and insert. METHODS: This study retrospectively reviewed 510 knees that underwent navigation-assisted TKA from January 2005 to December 2011...
January 9, 2018: Knee
https://www.readbyqxmd.com/read/29325190/influence-of-radiographic-positioning-on-canine-sacroiliac-and-lumbosacral-angle-measurements
#18
Susan Jones, Mason Savage, Brian Naughton, Susheela Singh, Ian Robertson, Simon C Roe, Denis J Marcellin-Little, Kyle G Mathews
OBJECTIVES:  To evaluate the influence of radiographic malpositioning on canine sacroiliac and lumbosacral inclination angles. METHODS:  Using canine cadavers, lateral pelvic radiographs were acquired with the radiographic beam in a neutral position and then rotated 5, 10 and 15° to mimic rotational malpositioning. The focal point of the beam was then focused over the abdomen and again over mid-diaphysis of the femur to mimic an abdominal or femoral radiographic study...
January 2018: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29325188/comparison-of-radiographic-measurements-of-the-femur-in-yorkshire-terriers-with-and-without-medial-patellar-luxation
#19
Michal Žilinčík, Marián Hluchý, Ladislav Takáč, Valent Ledecký
OBJECTIVE:  This article aimed to compare measurements of anatomical angles of the femurs, based on radiography, in Yorkshire Terriers without or with various grades of medial patellar luxation (MPL) based on radiography. METHODS:  The skeletally mature Yorkshire Terrier dogs without MPL and with various grades of MPL were included in this prospective study. Cases with other orthopaedic disorders were excluded. For inclusion of the dog, it was required that standardized digital radiographs of both femurs in craniocaudal and axial directions were available...
January 2018: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29324632/chair-lift-falls-and-injuries-in-children
#20
Eric W Glissmeyer, Ryan R Metzger, Robert Bolte
OBJECTIVE: The objective of this study was to compare demographic injury and treatment characteristics of hospitalized pediatric cases of falls from chair lifts to cases of other ski and snowboarding injuries and identify potential interventions for preventing falls from chair lifts. METHODS: Retrospective query of the trauma registry of Utah's only pediatric trauma center for children younger than 18 years requiring hospitalization for a ski or snowboarding injury from November 2004 to February 2014...
January 11, 2018: Pediatric Emergency Care
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