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Bone & Joint Research

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https://www.readbyqxmd.com/read/28536117/the-association-between-whole-body-sagittal-balance-and-risk-of-falls-among-elderly-patients-seeking-treatment-for-back-pain
#1
J Kim, J Y Hwang, J K Oh, M S Park, S W Kim, H Chang, T-H Kim
OBJECTIVES: The objective of this study was to assess the association between whole body sagittal balance and risk of falls in elderly patients who have sought treatment for back pain. Balanced spinal sagittal alignment is known to be important for the prevention of falls. However, spinal sagittal imbalance can be markedly compensated by the lower extremities, and whole body sagittal balance including the lower extremities should be assessed to evaluate actual imbalances related to falls...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28522447/photofunctionalised-ti6al4v-implants-enhance-early-phase-osseointegration
#2
R Yamauchi, T Itabashi, K Wada, T Tanaka, G Kumagai, Y Ishibashi
OBJECTIVES: Ultraviolet (UV) light-mediated photofunctionalisation is known to improve osseointegration of pure titanium (Ti). However, histological examination of titanium alloy (Ti6Al4V), which is frequently applied in orthopaedic and dental surgery, has not yet been performed. This study examined the osseointegration of photofunctionalised Ti6Al4V implants. METHODS: Ti and Ti6Al4V implants were treated with UV light, and the chemical composition and contact angle on the surfaces were evaluated to confirm photofunctionalisation...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28522446/non-contact-electromagnetic-induction-heating-for-eradicating-bacteria-and-yeasts-on-biomaterials-and-possible-relevance-to-orthopaedic-implant-infections-in-vitro-findings
#3
B G Pijls, I M J G Sanders, E J Kuijper, R G H H Nelissen
OBJECTIVES: Infection of implants is a major problem in elective and trauma surgery. Heating is an effective way to reduce the bacterial load in food preparation, and studies on hyperthermia treatment for cancer have shown that it is possible to heat metal objects with pulsed electromagnetic fields selectively (PEMF), also known as induction heating. We therefore set out to answer the following research question: is non-contact induction heating of metallic implants effective in reducing bacterial load in vitro? METHODS: Titanium alloy cylinders (Ti6Al4V) were exposed to PEMF from an induction heater with maximum 2000 watts at 27 kHz after being contaminated with five different types of micro-organisms: Staphylococcus epidermidis; Staphylococcus aureus; Pseudomonas aeruginosa; spore-forming Bacillus cereus; and yeast Candida albicans...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28522445/evaluation-of-bacterial-adherence-of-clinical-isolates-of-staphylococcus-sp-using-a-competitive-model-an-in-vitro-approach-to-the-race-for-the-surface-theory
#4
M Martinez-Perez, C Perez-Jorge, D Lozano, S Portal-Nuñez, R Perez-Tanoira, A Conde, M A Arenas, J M Hernandez-Lopez, J J de Damborenea, E Gomez-Barrena, P Esbrit, J Esteban
OBJECTIVES: Implant-related infection is one of the most devastating complications in orthopaedic surgery. Many surface and/or material modifications have been developed in order to minimise this problem; however, most of the in vitro studies did not evaluate bacterial adhesion in the presence of eukaryotic cells, as stated by the 'race for the surface' theory. Moreover, the adherence of numerous clinical strains with different initial concentrations has not been studied. METHODS: We describe a method for the study of bacterial adherence in the presence of preosteoblastic cells...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28515060/barriers-and-facilitators-experienced-in-collaborative-prospective-research-in-orthopaedic-oncology-a-qualitative-study
#5
J S Rendon, M Swinton, N Bernthal, M Boffano, T Damron, N Evaniew, P Ferguson, M Galli Serra, W Hettwer, P McKay, B Miller, L Nystrom, W Parizzia, P Schneider, A Spiguel, R Vélez, K Weiss, J P Zumárraga, M Ghert
OBJECTIVES: As tumours of bone and soft tissue are rare, multicentre prospective collaboration is essential for meaningful research and evidence-based advances in patient care. The aim of this study was to identify barriers and facilitators encountered in large-scale collaborative research by orthopaedic oncological surgeons involved or interested in prospective multicentre collaboration. METHODS: All surgeons who were involved, or had expressed an interest, in the ongoing Prophylactic Antibiotic Regimens in Tumour Surgery (PARITY) trial were invited to participate in a focus group to discuss their experiences with collaborative research in this area...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28515059/antibiotic-stability-over-six-weeks-in-aqueous-solution-at-body-temperature-with-and-without-heat-treatment-that-mimics-the-curing-of-bone-cement
#6
E Samara, T F Moriarty, L A Decosterd, R G Richards, E Gautier, P Wahl
OBJECTIVES: Thermal stability is a key property in determining the suitability of an antibiotic agent for local application in the treatment of orthopaedic infections. Despite the fact that long-term therapy is a stated goal of novel local delivery carriers, data describing thermal stability over a long period are scarce, and studies that avoid interference from specific carrier materials are absent from the orthopaedic literature. METHODS: In this study, a total of 38 frequently used antibiotic agents were maintained at 37°C in saline solution, and degradation and antibacterial activity assessed over six weeks...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28515058/tissue-engineered-cartilage-constructed-by-a-biotin-conjugated-anti-cd44-avidin-binding-technique-for-the-repairing-of-cartilage-defects-in-the-weight-bearing-area-of-knee-joints-in-pigs
#7
H Lin, J Zhou, L Cao, H R Wang, J Dong, Z R Chen
OBJECTIVES: The lack of effective treatment for cartilage defects has prompted investigations using tissue engineering techniques for their regeneration and repair. The success of tissue-engineered repair of cartilage may depend on the rapid and efficient adhesion of transplanted cells to a scaffold. Our aim in this study was to repair full-thickness defects in articular cartilage in the weight-bearing area of a porcine model, and to investigate whether the CD44 monoclonal antibody biotin-avidin (CBA) binding technique could provide satisfactory tissue-engineered cartilage...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28473335/evaluation-of-autologous-skeletal-muscle-derived-factors-for-regenerative-medicine-applications
#8
M Yoshikawa, T Nakasa, M Ishikawa, N Adachi, M Ochi
OBJECTIVES: Regenerative medicine is an emerging field aimed at the repair and regeneration of various tissues. To this end, cytokines (CKs), growth factors (GFs), and stem/progenitor cells have been applied in this field. However, obtaining and preparing these candidates requires invasive, costly, and time-consuming procedures. We hypothesised that skeletal muscle could be a favorable candidate tissue for the concept of a point-of-care approach. The purpose of this study was to characterize and confirm the biological potential of skeletal muscle supernatant for use in regenerative medicine...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28473334/the-efficacy-of-rotational-control-designs-in-promoting-torsional-stability-of-hip-fracture-fixation
#9
J D Gosiewski, T P Holsgrove, H S Gill
OBJECTIVES: Fractures of the proximal femur are a common clinical problem, and a number of orthopaedic devices are available for the treatment of such fractures. The objective of this study was to assess the rotational stability, a common failure predictor, of three different rotational control design philosophies: a screw, a helical blade and a deployable crucifix. METHODS: Devices were compared in terms of the mechanical work (W) required to rotate the implant by 6° in a bone substitute material...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28473333/the-clinical-and-cost-effectiveness-of-a-virtual-fracture-clinic-service-an-interrupted-time-series-analysis-and-before-and-after-comparison
#10
A McKirdy, A M Imbuldeniya
OBJECTIVES: To assess the clinical and cost-effectiveness of a virtual fracture clinic (VFC) model, and supplement the literature regarding this service as recommended by The National Institute for Health and Care Excellence (NICE) and the British Orthopaedic Association (BOA). METHODS: This was a retrospective study including all patients (17 116) referred to fracture clinics in a London District General Hospital from May 2013 to April 2016, using hospital-level data...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28450318/the-protective-role-of-nitric-oxide-dependent-innate-immunosuppression-in-the-early-stage-of-cartilage-damage-in-rats-role-of-nitric-oxide-in-cartilage-damage
#11
C-C Hsu, C-L Lin, I-M Jou, P-H Wang, J-S Lee
OBJECTIVES: Osteoarthritis (OA) is the most common form of arthritis, affecting approximately 15% of the human population. Recently, increased concentration of nitric oxide in serum and synovial fluid in patients with OA has been observed. However, the exact role of nitric oxide in the initiation of OA has not been elucidated. The aim of the present study was to investigate the role of nitric oxide in innate immune regulation during OA initiation in rats. METHODS: Rat OA was induced by performing meniscectomy surgery while cartilage samples were collected 0, 7, and 14 days after surgery...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28450317/the-segment-dependent-changes-in-lumbar-intervertebral-space-height-during-flexion-extension-motion
#12
M Fu, Q Ye, C Jiang, L Qian, D Xu, Y Wang, P Sun, J Ouyang
OBJECTIVES: Many studies have investigated the kinematics of the lumbar spine and the morphological features of the lumbar discs. However, the segment-dependent immediate changes of the lumbar intervertebral space height during flexion-extension motion are still unclear. This study examined the changes of intervertebral space height during flexion-extension motion of lumbar specimens. METHODS: First, we validated the accuracy and repeatability of a custom-made mechanical loading equipment set-up...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28450316/the-combined-use-of-kartogenin-and-platelet-rich-plasma-promotes-fibrocartilage-formation-in-the-wounded-rat-achilles-tendon-entheses
#13
J Zhang, T Yuan, N Zheng, Y Zhou, M V Hogan, J H-C Wang
OBJECTIVES: After an injury, the biological reattachment of tendon to bone is a challenge because healing takes place between a soft (tendon) and a hard (bone) tissue. Even after healing, the transition zone in the enthesis is not completely regenerated, making it susceptible to re-injury. In this study, we aimed to regenerate Achilles tendon entheses (ATEs) in wounded rats using a combination of kartogenin (KGN) and platelet-rich plasma (PRP). METHODS: Wounds created in rat ATEs were given three different treatments: kartogenin platelet-rich plasma (KGN-PRP); PRP; or saline (control), followed by histological and immunochemical analyses, and mechanical testing of the rat ATEs after three months of healing...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28438971/the-impact-and-efficacy-of-surveillance-in-patients-with-sarcoma-of-the-extremities
#14
P Cool, G Cribb
OBJECTIVES: In this cross sectional study, the impact and the efficacy of a surveillance programme for sarcomas of the extremities was analysed. METHODS: All patients who had treatment with curative intent for a high-grade sarcoma and were diagnosed before 2014 were included and followed for a minimum of two years. RESULTS: Of the 909 patients who had a review appointment in 2014, 131 were under review for a high-grade sarcoma of the extremities following treatment with curative intent...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28420623/externalised-locking-compression-plate-as-an-alternative-to-the-unilateral-external-fixator-a-biomechanical-comparative-study-of-axial-and-torsional-stiffness
#15
B F H Ang, J Y Chen, A K S Yew, S K Chua, S M Chou, S L Chia, J S B Koh, T S Howe
OBJECTIVES: External fixators are the traditional fixation method of choice for contaminated open fractures. However, patient acceptance is low due to the high profile and therefore physical burden of the constructs. An externalised locking compression plate is a low profile alternative. However, the biomechanical differences have not been assessed. The objective of this study was to evaluate the axial and torsional stiffness of the externalised titanium locking compression plate (ET-LCP), the externalised stainless steel locking compression plate (ESS-LCP) and the unilateral external fixator (UEF)...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28408376/a-comparative-study-of-tissue-engineered-constructs-from-acropora-and-porites-coral-in-a-large-animal-bone-defect-model
#16
A Decambron, M Manassero, M Bensidhoum, B Lecuelle, D Logeart-Avramoglou, H Petite, V Viateau
OBJECTIVES: To compare the therapeutic potential of tissue-engineered constructs (TECs) combining mesenchymal stem cells (MSCs) and coral granules from either Acropora or Porites to repair large bone defects. MATERIALS AND METHODS: Bone marrow-derived, autologous MSCs were seeded on Acropora or Porites coral granules in a perfusion bioreactor. Acropora-TECs (n = 7), Porites-TECs (n = 6) and bone autografts (n = 2) were then implanted into 25 mm long metatarsal diaphyseal defects in sheep...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28404548/the-tip-apex-distance-in-the-x-bolt-dynamic-plating-system
#17
M A Fernandez, A Aquilina, J Achten, N Parsons, M L Costa, X L Griffin
OBJECTIVES: The Sliding Hip Screw (SHS) is commonly used to treat trochanteric hip fractures. Fixation failure is a devastating complication requiring complex revision surgery. One mode of fixation failure is lag screw cut-out which is greatest in unstable fracture patterns and when the tip-apex distance of the lag screw is > 25 mm. The X-Bolt Dynamic Hip Plating System (X-Bolt Orthopaedics, Dublin, Ireland) is a new device which aims to reduce this risk of cut-out. However, some surgeons have reported difficulty minimising the tip-apex distance with subsequent concerns that this may lead to an increased risk of cut-out...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28404547/the-role-of-mir-320a-and-il-1%C3%AE-in-human-chondrocyte-degradation
#18
Y Jin, X Chen, Z Y Gao, K Liu, Y Hou, J Zheng
OBJECTIVES: This study aimed to explore the role of miR-320a in the pathogenesis of osteoarthritis (OA). METHODS: Human cartilage cells (C28/I2) were transfected with miR-320a or antisense oligonucleotides (ASO)-miR-320a, and treated with IL-1β. Subsequently the expression of collagen type II alpha 1 (Col2α1) and aggrecan (ACAN), and the concentrations of sulfated glycosaminoglycans (sGAG) and matrix metallopeptidase 13 (MMP-13), were assessed. Luciferase reporter assay, qRT-PCR, and Western blot were performed to explore whether pre-B-cell leukemia Homeobox 3 (PBX3) was a target of miR-320a...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28377379/surgical-trial-design-learning-curve-and-surgeon-volume-determining-whether-inferior-results-are-due-to-the-procedure-itself-or-delivery-of-the-procedure-by-the-surgeon
#19
EDITORIAL
A H R W Simpson, C R Howie, J Norrie
No abstract text is available yet for this article.
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28360085/silencing-of-translation-initiation-factor-eif3b-promotes-apoptosis-in-osteosarcoma-cells
#20
Y J Choi, Y S Lee, H W Lee, D M Shim, S W Seo
OBJECTIVES: Eukaryotic translation initiation factor 3 (eIF3) is a multi-subunit complex that plays a critical role in translation initiation. Expression levels of eIF3 subunits are elevated or decreased in various cancers, suggesting a role for eIF3 in tumorigenesis. Recent studies have shown that the expression of the eIF3b subunit is elevated in bladder and prostate cancer, and eIF3b silencing inhibited glioblastoma growth and induced cellular apoptosis. In this study, we investigated the role of eIF3b in the survival of osteosarcoma cells...
March 2017: Bone & Joint Research
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