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https://www.readbyqxmd.com/read/28229033/an-innovative-use-of-cortoss-bone-cement-to-stabilize-a-nonunion-after-interbody-fusion
#1
Michelle Granville, Robert E Jacobson
A 65-year-old male originally had surgery for spondylolisthesis at L5-S1 in 2008 and then went on to have an L4-5 transforaminal lumbar interbody fusion (TLIF) with pedicle screw fixation from L4 to S1 and interbody graft in 2010. Despite having two surgical procedures, he continued with intractable back pain and was told he had a failed lumbar fusion. When he was evaluated with a computerized tomography (CT) scan from April 2015, it demonstrated an erosive nonunion of the L4-5 interbody fusion without incorporation of the polyetheretherketone (PEEK) cage...
January 20, 2017: Curēus
https://www.readbyqxmd.com/read/28228786/hydroxyapatite-in-total-hip-arthroplasty-our-experience-with-a-plasma-spray-porous-titanium-alloy-hydroxyapatite-double-coated-cementless-stem
#2
Iacopo Castellini, Lorenzo Andreani, Paolo Domenico Parchi, Enrico Bonicoli, Nicola Piolanti, Francesca Risoli, Michele Lisanti
PURPOSE: Total hip arthroplasty could fail due to many factors and one of the most common is the aseptic loosening. In order to achieve an effective osseointegration and reduce risk of lossening, the use of cemented implant, contact porous bearing surface and organic coating were developed. Aim of this study was to evaluate clinical and radiological mid-term outcomes of a porous titanium alloy/hydroxyapatite double coating manufactured cementless femoral stem applied with "plasma spray" technique and to demonstrate the possibility to use this stem in different types of femoral canals...
September 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28226957/inexpensive-bone-cement-substitute-for-vertebral-cement-augmentation-training
#3
Marianne Hollensteiner, Markus Samrykit, Michael Hess, David Fuerst, Benjamin Esterer, Andreas Schrempf, Marianne Hollensteiner, Markus Samrykit, Michael Hess, David Fuerst, Benjamin Esterer, Andreas Schrempf, Benjamin Esterer, Michael Hess, Markus Samrykit, Andreas Schrempf, Marianne Hollensteiner, David Fuerst
Vertebral compression fractures are treated surgically for approximately 25 years. In percutaneous cement augmentation techniques bone cement is applied to a fractured vertebra under fluoroscopic evidence to stabilize the bone fragments. Complications due to leakage of the low viscosity bone cement are reported in 5 to 15% of all routine cases. During the intraoperative application of bone cement surgeons rely on visiohaptic feedback and hence need to be familiar with the cement's rheology properties. Therefore, training is necessary...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222750/investigations-of-silk-fiber-calcium-phosphate-cement-biocomposite-for-radial-bone-defect-repair-in-rabbits
#4
Lei Zhou, Chunjie Hu, Yingjun Chen, Shiqi Xia, Jinglong Yan
BACKGROUND: This study aimed to investigate the effects of silk fiber (SF)/calcium phosphate cement (CPC) biocomposite on repairing radial bone defects in rabbits. METHODS: Four-month-old New Zealand rabbits were selected to create a bilateral radial bone defect model and divided into four groups according to implanted material: SF/CPC, SF/CPC/particulate bone (PB), PB, and control (C). The specimens were removed at four and eight postoperative weeks for general observation, X-ray examination, tissue slicing, scanning electron microscopy (SEM), and biomechanical testing...
February 21, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28222212/excellent-mid-term-results-of-a-new-polished-tapered-modular-cemented-stem-a-study-of-113-hip-replacements-with-minimum-5-year-follow-up
#5
Jens Vanbiervliet, Jan F A Somers
BACKGROUND: This prospective cohort study reports the medium-term clinical and radiographic results of 113 hips treated with a hybrid total hip replacement (THR) with a new cemented tapered cobalt-chrome (Co-Cr) stem with a titanium (Ti) modular neck (ProfemurXm®). METHOD: Between October 2008 and December 2010 we performed 115 consecutive hybrid THR with the ProfemurXm® in 105 patients. RESULTS: Survivorship of the implant (stem and modular neck) at a mean of 6...
February 18, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28220260/three-stage-treatment-protocol-for-recalcitrant-distal-femoral-nonunion
#6
Ching-Hou Ma, Yen-Chun Chiu, Yuan-Kun Tu, Cheng-Yo Yen, Chin-Hsien Wu
INTRODUCTION: In this study, we proposed a three-stage treatment protocol for recalcitrant distal femoral nonunion and aimed to analyze the clinical results. MATERIALS AND METHODS: We retrospective reviewed 12 consecutive patients with recalcitrant distal femoral nonunion undergoing our three-stage treatment protocol from January 2010 to December 2014 in our institute. The three-stage treatment protocol comprised debridement of the nonunion site, lengthening to eliminate leg length discrepancy, deformity correction, stabilization with a locked plate, filling of the defect with cement spacer for inducing membrane formation, and bone reconstruction using a cancellous bone autograft (Masquelet technique) or free vascularized fibular bone graft...
February 20, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28218379/the-corail-stem-as-a-reverse-hybrid-survivorship-and-x-ray-analysis-at-10-years
#7
Helge Wangen, Lars Nordsletten, Jens G Boldt, Anne M Fenstad, David E Beverland
BACKGROUND: The use of a cemented cup together with an uncemented stem in total hip arthroplasty (THA) has become popular in Norway and Sweden during the last decade. The results of this prosthetic concept, reverse hybrid THA have been sparsely described.We report our experience of reverse hybrid THA, using the Elite plus polyethylene cemented cup together with the Corail fully hydroxyapatite-coated uncemented stem and a 28-mm alumina ceramic head. PATIENTS AND METHODS: 132 consecutive reverse hybrid hip arthroplasties were performed from January 2000 to December 2003 in 126 patients with a mean age of 54...
February 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28218375/retrieval-and-radiographic-analysis-of-the-contour-antiprotrusio-cage
#8
Jonathan M Vigdorchik, Richard S Yoon, Susannah L Gilbert, Joseph D Lipman, Mathias P Bostrom
INTRODUCTION: Acetabular reconstruction in the setting of severe bone loss or pelvic discontinuity remains a challenging problem. Multiple methods of treatment have been described including antiprotrusio cages (APCs). The objective of this study is to combine biomechanical analysis of retrieved APCs with radiographic and clinical data to determine which factors influence or predict APC failure. METHODS: 41 APCs were identified. Sequential radiographs were examined for cage and polyethylene cup abduction angles, change in centre of rotation, screw placement, progression of cage failure, and failure mechanism...
February 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28213848/intraoperative-blood-pressure-changes-during-cemented-versus-uncemented-bipolar-hemiarthroplasty-for-displaced-femoral-neck-fracture-a-multi-center-cohort-study-the-effect-of-bone-cement-for-bipolar-hemiarthroplasty-in-elderly-patients
#9
Shuichi Miyamoto, Junichi Nakamura, Satoshi Iida, Tomonori Shigemura, Shunji Kishida, Isao Abe, Munenori Takeshita, Yoshitada Harada, Sumihisa Orita, Seiji Ohtori
INTRODUCTION: The purpose of this study was to compare the cemented bipolar hemiarthroplasty with uncemented about the change of intraoperative blood pressure and the incidence of major complications in elderly patients with femoral neck fracture. MATERIALS AND METHODS: This multiple center prospective cohort study included only patients with acute displaced femoral neck fracture (Garden stage III or IV). All patients were treated with cemented or uncemented bipolar hemiarthroplasty using modified Hardinge or Watson-Jones approach in the lateral decubitus position...
February 17, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28213100/effect-of-processing-conditions-of-dicalcium-phosphate-cements-on-graft-resorption-and-bone-formation
#10
Zeeshan Sheikh, Yu Ling Zhang, Faleh Tamimi, Jake Barralet
Dicalcium phosphate cements (brushite and monetite) are resorbable biomaterials with osteoconductive potential for bone repair and regeneration that have yet to gain widespread commercial use. Brushite can be converted to monetite by heat treatments additionally resulting in various changes in the physico-chemical properties. However, since conversion is most commonly performed using autoclave sterilisation (wet heating), it is uncertain whether the properties observed for monetite as a result of heating brushite under dry conditions affect resorption and bone formation favourably...
February 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28212454/clinical-comparison-of-screw-retained-and-screwless-morse-taper-implant-abutment-connections-one-year-postloading-results
#11
Esma Geckili, Onur Geckili, Hakan Bilhan, Omer Kutay, Tayfun Bilgin
PURPOSE: The purpose of this study was to clinically evaluate the screwless Morse taper implant-abutment connection type, in which the retention screw is totally eliminated, in terms of stability, success, periodontal parameters, and marginal bone levels after 1 year of function by comparing it with a passive fit internal implant-abutment connection, wherein a space exists between the matching components. MATERIALS AND METHODS: Each edentulous subject received an implant with a screwless Morse taper connection (MT) in the left canine area of the mandible and an implant with a screw-retained implant-abutment connection (SR) in the right canine area of the mandible...
February 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28209274/long-term-durability-of-ceramic-tri-condylar-knee-implants-a-minimum-15-year-follow-up
#12
Shinichiro Nakamura, Hiromu Ito, Kenji Nakamura, Shinichi Kuriyama, Moritoshi Furu, Shuichi Matsuda
BACKGROUND: Ceramic bearings are not commonly used in total knee arthroplasty (TKA). So far, little information is available about whether long-term survivorship and good clinical outcomes can be ensured with ceramic knee implants. The purposes of the present study were to evaluate the clinical and radiological outcomes, and to assess the long-term durability of a ceramic tri-condylar implant. METHODS: A total of 507 consecutive TKAs were carried out using a ceramic tri-condylar femoral implant...
January 20, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28202208/survivorship-analysis-of-eighty-revised-hip-arthroplasties-with-the-impaction-grafting-technique-using-whole-femoral-head-allografts-with-the-articular-cartilage
#13
Ahmed Fadulelmola, Efstathios Drampalos, John Hodgkinson, Mukesh Hemmady
BACKGROUND: Acetabular impaction bone grafting aims to restore anatomy in hip revision surgery. This is an effective but expensive and time-consuming technique. Usually, the articular cartilage is removed from the femoral head allograft. We aimed to reproduce the same results retaining the cartilage of the allograft. METHODS: Eighty acetabular revisions using impacted morselized bone graft retaining the articular cartilage and a cemented cup were studied retrospectively...
January 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28197990/a-chlorhexidine-releasing-epoxy-based-coating-on-titanium-implants-prevents-staphylococcus-aureus-experimental-biomaterial-associated-infection
#14
M Riool, A J Dirks, V Jaspers, L de Boer, T J Loontjens, C M van der Loos, S Florquin, I Apachitei, L N Rijk, H A Keul, S A Zaat
Prevention of biomaterial-associated infections (BAI) remains a challenging problem, in particular due to the increased risk of resistance development with the current antibiotic-based strategies. Metallic orthopaedic devices, such as non-cemented implants, are often inserted under high mechanical stress. These non-cemented implants cannot be protected by e.g. antibioticreleasing bone cement or other antimicrobial approaches, such as the use of bioactive glass. Therefore, in order to avoid abrasion during implantation procedures, we developed an antimicrobial coating with great mechanical stability for orthopaedic implants, to prevent Staphylococcus aureus BAI...
February 14, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28196604/addition-of-bioactive-glass-to-glass-ionomer-cements-effect-on-the-physico-chemical-properties-and-biocompatibility
#15
T De Caluwé, C W J Vercruysse, I Ladik, R Convents, H Declercq, L C Martens, R M H Verbeeck
OBJECTIVES: Glass ionomer cements (GICs) are a subject of research because of their inferior mechanical properties, despite their advantages such as fluoride release and direct bonding to bone and teeth. Recent research aims to improve the bioactivity of the GICs and thereby improve mechanical properties on the long term. In this study, two types of bioactive glasses (BAG) (45S5F and CF9) are combined with GICs to evaluate the physico-chemical properties and biocompatibility of the BAG-GIC combinations...
February 10, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28196158/hybrid-implants-in-healthy-and-periodontally-compromised-patients-a-preliminary-clinical-and-radiographic-study
#16
Sergio Spinato, Fabio Bernardello, Paolo Sassatelli, Davide Zaffe
This preliminary clinical and radiographic study examined the survival of, the marginal bone loss (MBL) around, and the influence of prosthetic abutment height (AH) on MBL around hybrid implants placed in two groups of partially edentulous patients: healthy (HPs) and periodontally compromised (PCPs) patients. A total of 93 patients requiring single or multiunit implant restoration, in the mandible or maxilla, were treated while undergoing cement-retained prosthetic restoration. A total of 54 implants (35 in the maxilla and 19 in the mandible) were placed in 45 HPs, and 56 implants (31 in the maxilla and 25 in the mandible) in 48 PCPs...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28196118/sr-substituted-bone-cements-direct-mesenchymal-stem-cells-osteoblasts-and-osteoclasts-fate
#17
Monica Montesi, Silvia Panseri, Massimiliano Dapporto, Anna Tampieri, Simone Sprio
Strontium-substituted apatitic bone cements enriched with sodium alginate were developed as a potential modulator of bone cells fate. The biological impact of the bone cement were investigated in vitro through the study of the effect of the nanostructured apatitic composition and the doping of strontium on mesenchymal stem cells, pre-osteoblasts and osteoclasts behaviours. Up to 14 days of culture the bone cells viability, proliferation, morphology and gene expression profiles were evaluated. The results showed that different concentrations of strontium were able to evoke a cell-specific response, in fact an inductive effect on mesenchymal stem cells differentiation and pre-osteoblasts proliferation and an inhibitory effect on osteoclasts activity were observed...
2017: PloS One
https://www.readbyqxmd.com/read/28194874/preparation-and-characterization-of-a-silk-fibroin-calcium-sulfate-bone-cement
#18
Fuzhan Zhang, Hai Zhu, Genlin Wang, Jile Xie, Yunxia Tao, Wei Xia, Huilin Yang
This study aimed to prepare and characterize a silk fibroin/calcium sulfate (SF/CS) bone cement. SF solutions of the following concentrations 3, 4.5, 6, 7.5, and 9 g/L were used to prepare bone cement samples with SF-to-CS ratios of 0.35, 0.40, 0.45, 0.50, and 0.55 mL of SF solutions (or water as control) per g of CS. Compressive strength, setting time, degradation when immersed in phosphate-buffered saline, X-ray diffraction, Fourier infrared spectroscopy, and scanning electron microscopy were used to characterize the SF/CS bone cement...
February 14, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28191595/ct-guided-percutaneous-screw-fixation-plus-cementoplasty-in-the-treatment-of-painful-bone-metastases-with-fractures-or-a-high-risk-of-pathological-fracture
#19
Claudio Pusceddu, Alessandro Fancellu, Nicola Ballicu, Rosa Maria Fele, Barbara Sotgia, Luca Melis
OBJECTIVE: To evaluate the feasibility and effectiveness of computed tomography (CT)-guided percutaneous screw fixation plus cementoplasty (PSFPC), for either treatment of painful metastatic fractures or prevention of pathological fractures, in patients who are not candidates for surgical stabilization. MATERIALS AND METHODS: Twenty-seven patients with 34 metastatic bone lesions underwent CT-guided PSFPC. Bone metastases were located in the vertebral column, femur, and pelvis...
February 13, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28183678/cu-2-co-2-and-cr-3-doping-of-a-calcium-phosphate-cement-influences-materials-properties-and-response-of-human-mesenchymal-stromal-cells
#20
Martha Schamel, Anne Bernhardt, Mandy Quade, Claudia Würkner, Uwe Gbureck, Claus Moseke, Michael Gelinsky, Anja Lode
The application of biologically active metal ions to stimulate cellular reactions is a promising strategy to accelerate bone defect healing. Brushite-forming calcium phosphate cements were modified with low doses of Cu(2+), Co(2+) and Cr(3+). The modified cements released the metal ions in vitro in concentrations which were shown to be non-toxic for cells. The release kinetics correlated with the solubility of the respective metal phosphates: 17-45 wt.-% of Co(2+) and Cu(2+), but <1 wt.-% of Cr(3+) were released within 28days...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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