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Bone & Joint Research

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https://www.readbyqxmd.com/read/30123499/obesity-osteoarthritis-and-genetic-risk-the-rs182052-polymorphism-in-the-adipoq-gene-is-potentially-associated-with-risk-of-knee-osteoarthritis
#1
L Jiang, X Zhu, J Rong, B Xing, S Wang, A Liu, M Chu, G Huang
Objectives: Given the function of adiponectin (ADIPOQ) on the inflammatory condition of obesity and osteoarthritis (OA), we hypothesized that the ADIPOQ gene might be a candidate gene for a marker of susceptibility to OA. Methods: We systematically screened three tagging polymorphisms (rs182052, rs2082940 and rs6773957) in the ADIPOQ gene, and evaluated the association between the genetic variants and OA risk in a case-controlled study that included 196 OA patients and 442 controls in a northern Chinese population...
July 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30123498/biomechanical-behaviour-of-a-french-femoral-component-with-thin-cement-mantle-the-french-paradox-may-not-be-a-paradox-after-all
#2
Y Numata, A Kaneuji, L Kerboull, E Takahashi, T Ichiseki, K Fukui, J Tsujioka, N Kawahara
Objective: Cement thickness of at least 2 mm is generally associated with more favorable results for the femoral component in cemented hip arthroplasty. However, French-designed stems have shown favorable outcomes even with thin cement mantle. The biomechanical behaviors of a French stem, Charnley-Marcel-Kerboull (CMK) and cement were researched in this study. Methods: Six polished CMK stems were implanted into a composite femur, and one million times dynamic loading tests were performed...
July 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30123497/a-retrieval-analysis-of-the-precice-intramedullary-limb-lengthening-system
#3
V C Panagiotopoulou, K Davda, H S Hothi, J Henckel, A Cerquiglini, W D Goodier, J Skinner, A Hart, P R Calder
Objectives: The Precice nail is the latest intramedullary lengthening nail with excellent early outcomes. Implant complications have led to modification of the nail design. The aim of this study was to perform a retrieval study of Precice nails following lower-limb lengthening and to assess macroscopical and microscopical changes to the implants and evaluate differences following design modification, with the aim of identifying potential surgical, implant, and patient risk factors. Methods: A total of 15 nails were retrieved from 13 patients following lower-limb lengthening...
July 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30123496/radiographic-predictors-for-bone-mineral-loss-cortical-thickness-and-index-of-the-distal-femur
#4
Q-F He, H Sun, L-Y Shu, Y Zhu, X-T Xie, Y Zhan, C-F Luo
Objectives: Researchers continue to seek easier ways to evaluate the quality of bone and screen for osteoporosis and osteopenia. Until recently, radiographic images of various parts of the body, except the distal femur, have been reappraised in the light of dual-energy X-ray absorptiometry (DXA) findings. The incidence of osteoporotic fractures around the knee joint in the elderly continues to increase. The aim of this study was to propose two new radiographic parameters of the distal femur for the assessment of bone quality...
July 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30123495/a-potential-key-role-for-alpha-haemolysin-of-staphylococcus-aureus-in-mediating-chondrocyte-death-in-septic-arthritis
#5
I D M Smith, K M Milto, C J Doherty, S G B Amyes, A H R W Simpson, A C Hall
Objectives: Staphylococcus aureus ( S. aureus ) is the most commonly implicated organism in septic arthritis, a condition that may be highly destructive to articular cartilage. Previous studies investigating laboratory and clinical strains of S. aureus have demonstrated that potent toxins induced significant chondrocyte death, although the precise toxin or toxins that were involved was unknown. In this study, we used isogenic S. aureus mutants to assess the influence of alpha (Hla)-, beta (Hlb)-, and gamma (Hlg)-haemolysins, toxins considered important for the destruction of host tissue, on in situ bovine chondrocyte viability...
July 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30123494/the-effect-of-local-antibiotic-prophylaxis-when-treating-open-limb-fractures-a-systematic-review-and-meta-analysis
#6
M Morgenstern, A Vallejo, M A McNally, T F Moriarty, J Y Ferguson, S Nijs, W J Metsemakers
Objectives: As well as debridement and irrigation, soft-tissue coverage, and osseous stabilization, systemic antibiotic prophylaxis is considered the benchmark in the management of open fractures and considerably reduces the risk of subsequent fracture-related infections (FRI). The direct application of antibiotics in the surgical field (local antibiotics) has been used for decades as additional prophylaxis in open fractures, although definitive evidence confirming a beneficial effect is scarce...
July 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30123493/dynamic-shear-analysis-a-novel-method-to-determine-mechanical-integrity-of-normal-and-torn-human-acetabular-labra-implications-for-prediction-of-outcome-of-repair
#7
A K Woods, J Broomfield, P Monk, F Vollrath, S Glyn-Jones
Objectives: The aim of this study was to investigate the structural integrity of torn and non-torn human acetabular labral tissue. Methods: A total of 47 human labral specimens were obtained from a biobank. These included 22 torn specimens and 25 control specimens from patients undergoing total hip arthroplasty with macroscopically normal labra. The specimens underwent dynamic shear analysis using a rheometer to measure storage modulus, as an indicator of structural integrity...
July 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30034797/can-patient-specific-finite-element-models-better-predict-fractures-in-metastatic-bone-disease-than-experienced-clinicians-towards-computational-modelling-in-daily-clinical-practice
#8
F Eggermont, L C Derikx, N Verdonschot, I C M van der Geest, M A A de Jong, A Snyers, Y M van der Linden, E Tanck
Objectives: In this prospective cohort study, we investigated whether patient-specific finite element (FE) models can identify patients at risk of a pathological femoral fracture resulting from metastatic bone disease, and compared these FE predictions with clinical assessments by experienced clinicians. Methods: A total of 39 patients with non-fractured femoral metastatic lesions who were irradiated for pain were included from three radiotherapy institutes. During follow-up, nine pathological fractures occurred in seven patients...
June 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30034796/biomechanical-evaluation-of-a-new-gliding-screw-concept-for-the-fixation-of-proximal-humeral-fractures
#9
Y P Acklin, I Zderic, J A Inzana, S Grechenig, R Schwyn, R G Richards, B Gueorguiev
Aims: Plating displaced proximal humeral fractures is associated with a high rate of screw perforation. Dynamization of the proximal screws might prevent these complications. The aim of this study was to develop and evaluate a new gliding screw concept for plating proximal humeral fractures biomechanically. Methods: Eight pairs of three-part humeral fractures were randomly assigned for pairwise instrumentation using either a prototype gliding plate or a standard PHILOS plate, and four pairs were fixed using the gliding plate with bone cement augmentation of its proximal screws...
June 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30034795/inhibition-of-mir-126-protects-chondrocytes-from-il-1%C3%AE-induced-inflammation-via-upregulation-of-bcl-2
#10
C D Yu, W H Miao, Y Y Zhang, M J Zou, X F Yan
Objectives: The aim of this study was to investigate the role of miR-126 in the development of osteoarthritis, as well as the potential molecular mechanisms involved, in order to provide a theoretical basis for osteoarthritis treatment and a novel perspective for clinical therapy. Methods: Human chondrocyte cell line CHON-001 was administrated by different doses of interleukin (IL)-1β to simulate inflammation. Cell viability, migration, apoptosis, IL-6, IL-8, and tumour necrosis factor (TNF)-α expression, as well as expression of apoptosis-related factors, were measured to assess inflammation...
June 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30034794/enhanced-angiogenesis-and-increased-bone-turnover-characterize-bone-marrow-lesions-in-osteoarthritis-at-the-base-of-the-thumb
#11
M Shabestari, N J Kise, M A Landin, S Sesseng, J C Hellund, J E Reseland, E F Eriksen, I K Haugen
Objectives: Little is known about tissue changes underlying bone marrow lesions (BMLs) in non-weight-bearing joints with osteoarthritis (OA). Our aim was to characterize BMLs in OA of the hand using dynamic histomorphometry. We therefore quantified bone turnover and angiogenesis in subchondral bone at the base of the thumb, and compared the findings with control bone from hip OA. Methods: Patients with OA at the base of the thumb, or the hip, underwent preoperative MRI to assess BMLs, and tetracycline labelling to determine bone turnover...
June 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30034793/phospho1-is-essential-for-normal-bone-fracture-healing-an-animal-study
#12
M W Morcos, H Al-Jallad, J Li, C Farquharson, J L Millán, R C Hamdy, M Murshed
Objectives: Bone fracture healing is regulated by a series of complex physicochemical and biochemical processes. One of these processes is bone mineralization, which is vital for normal bone development. Phosphatase, orphan 1 (PHOSPHO1), a skeletal tissue-specific phosphatase, has been shown to be involved in the mineralization of the extracellular matrix and to maintain the structural integrity of bone. In this study, we examined how PHOSPHO1 deficiency might affect the healing and quality of fracture callus in mice...
June 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30034792/aseptic-lymphocyte-dominated-vasculitis-associated-lesions-are-related-to-changes-in-metal-ion-handling-in-the-joint-capsules-of-metal-on-metal-hip-arthroplasties
#13
D J Langton, R P Sidaginamale, T J Joyce, J G Bowsher, J P Holland, D Deehan, A V F Nargol, S Natu
Objectives: We have encountered patients who developed large joint fluid collections with massive elevations in chromium (Cr) and cobalt (Co) concentrations following metal-on-metal (MoM) hip arthroplasties. In some cases, retrieval analysis determined that these ion concentrations could not be explained simply by the wear rates of the components. We hypothesized that these effects may be associated with aseptic lymphocyte-dominated vasculitis-associated lesion (ALVAL). Patients and Methods: We examined the influence of the ALVAL grade on synovial fluid Co and Cr concentrations following adjustment for patient and device variables, including volumetric wear rates...
June 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/30034791/marker-free-model-based-radiostereometric-analysis-for-evaluation-of-hip-joint-kinematics-a-validation-study
#14
L Hansen, S De Raedt, P B Jørgensen, B Mygind-Klavsen, B Kaptein, M Stilling
Objectives: To validate the precision of digitally reconstructed radiograph (DRR) radiostereometric analysis (RSA) and the model-based method (MBM) RSA with respect to benchmark marker-based (MM) RSA for evaluation of kinematics in the native hip joint. Methods: Seven human cadaveric hemipelves were CT scanned and bone models were segmented. Tantalum beads were placed in the pelvis and proximal femoral bone. RSA recordings of the hips were performed during flexion, adduction and internal rotation...
June 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29922458/neuroarthropathy-in-diabetes-pathogenesis-of-charcot-arthropathy
#15
S E Johnson-Lynn, A W McCaskie, A P Coll, A H N Robinson
Charcot neuroarthropathy is a rare but serious complication of diabetes, causing progressive destruction of the bones and joints of the foot leading to deformity, altered biomechanics and an increased risk of ulceration. Management is complicated by a lack of consensus on diagnostic criteria and an incomplete understanding of the pathogenesis. In this review, we consider recent insights into the development of Charcot neuroarthropathy. It is likely to be dependent on several interrelated factors which may include a genetic pre-disposition in combination with diabetic neuropathy...
May 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29922457/the-effects-of-high-glucose-condition-on-rat-tenocytes-in-vitro-and-rat-achilles-tendon-in-vivo
#16
Y Ueda, A Inui, Y Mifune, R Sakata, T Muto, Y Harada, F Takase, T Kataoka, T Kokubu, R Kuroda
Objectives: The aim of this study was to investigate the effect of hyperglycaemia on oxidative stress markers and inflammatory and matrix gene expression within tendons of normal and diabetic rats and to give insights into the processes involved in tendinopathy. Methods: Using tenocytes from normal Sprague-Dawley rats, cultured both in control and high glucose conditions, reactive oxygen species (ROS) production, cell proliferation, messenger RNA (mRNA) expression of NADPH oxidase (NOX) 1 and 4, interleukin-6 (IL-6), matrix metalloproteinase (MMP)-2, tissue inhibitors of matrix metalloproteinase (TIMP)-1 and -2 and type I and III collagens were determined after 48 and 72 hours in vitro ...
May 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29922456/the-biological-response-to-laser-aided-direct-metal-coated-titanium-alloy-ti6al4v
#17
T Shin, D Lim, Y S Kim, S C Kim, W L Jo, Y W Lim
Objectives: Laser-engineered net shaping (LENS) of coated surfaces can overcome the limitations of conventional coating technologies. We compared the in vitro biological response with a titanium plasma spray (TPS)-coated titanium alloy (Ti6Al4V) surface with that of a Ti6Al4V surface coated with titanium using direct metal fabrication (DMF) with 3D printing technologies. Methods: The in vitro ability of human osteoblasts to adhere to TPS-coated Ti6Al4V was compared with DMF-coating...
May 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29922455/recall-of-preoperative-oxford-hip-and-knee-scores-one-year-after-arthroplasty-is-an-alternative-and-reliable-technique-when-used-for-a-cohort-of-patients
#18
T F M Yeoman, N D Clement, D Macdonald, M Moran
Objectives: The primary aim of this study was to assess the reproducibility of the recalled preoperative Oxford Hip Score (OHS) and Oxford Knee Score (OKS) one year following arthroplasty for a cohort of patients. The secondary aim was to assess the reliability of a patient's recollection of their own preoperative OHS and OKS one year following surgery. Methods: A total of 335 patients (mean age 72.5; 22 to 92; 53.7% female) undergoing total hip arthroplasty (n = 178) and total knee arthroplasty (n = 157) were prospectively assessed...
May 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29922454/use-of-integrative-epigenetic-and-mrna-expression-analyses-to-identify-significantly-changed-genes-and-functional-pathways-in-osteoarthritic-cartilage
#19
A He, Y Ning, Y Wen, Y Cai, K Xu, Y Cai, J Han, L Liu, Y Du, X Liang, P Li, Q Fan, J Hao, X Wang, X Guo, T Ma, F Zhang
Aim: Osteoarthritis (OA) is caused by complex interactions between genetic and environmental factors. Epigenetic mechanisms control the expression of genes and are likely to regulate the OA transcriptome. We performed integrative genomic analyses to define methylation-gene expression relationships in osteoarthritic cartilage. Patients and Methods: Genome-wide DNA methylation profiling of articular cartilage from five patients with OA of the knee and five healthy controls was conducted using the Illumina Infinium HumanMethylation450 BeadChip (Illumina, San Diego, California)...
May 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29922453/a-systematic-review-of-surgical-methods-to-restore-articular-cartilage-in-the-hip
#20
W E Hotham, A Malviya
This systematic review examines the current literature regarding surgical techniques for restoring articular cartilage in the hip, from the older microfracture techniques involving perforation to the subchondral bone, to adaptations of this technique using nanofractures and scaffolds. This review discusses the autologous and allograft transfer systems and the autologous matrix-induced chondrogenesis (AMIC) technique, as well as a summary of the previously discussed techniques, which could become common practice for restoring articular cartilage, thus reducing the need for total hip arthroplasty...
May 2018: Bone & Joint Research
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