| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Blunn, Gw
University of Portsmouth
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023Accelerated Degradation of Poly-ε-caprolactone Composite Scaffolds for Large Bone Defectscitations
- 2022Design and in vivo testing of novel single-stage tendon graft using polyurethane nanocomposite polymer for tendon reconstructioncitations
- 2018Novel adaptive finite element algorithms to predict bone ingrowth in additive manufactured porous implantscitations
- 2018Novel adaptive finite element algorithms to predict bone ingrowth in additive manufactured porous implants.
- 2017Clinical cold welding of the modular total hip arthroplasty prosthesiscitations
- 2017Intrinsic osteoinductivity of porous titanium scaffold for bone tissue engineeringcitations
- 2017Fretting corrosion behavior of nitinol spinal rods in conjunction with titanium pedicle screwscitations
- 2016Corrosion at the head-neck interface of current designs of modular femoral componentscitations
- 2016Metal concentrations in the blood and tissues after implantation of titanium growth guidance sliding instrumentationcitations
- 2016Nanohydroxyapatite effect on the degradation, osteoconduction and mechanical properties of polymeric bone tissue engineered scaffoldscitations
- 2015The effect of frictional torque and bending moment on corrosion at the taper interfacecitations
- 2015Lessons from retrievalscitations
- 2015Analysis of retrieved growth guidance sliding LSZ-4D devices for early onset scoliosis and investigation of the use of nitinol rods for this systemcitations
- 2015Silicate-substituted calcium phosphate with enhanced strut porosity stimulates osteogenic differentiation of human mesenchymal stem cellscitations
- 2014Low dose of propranolol does not affect rat osteotomy healing and callus strengthcitations
- 2013Enhanced wear and corrosion in modular tapers in total hip replacement is associated with the contact area and surface topographycitations
- 2011Enhancing the soft tissue seal around intraosseous transcutaneous amputation prostheses using silanized fibronectin titanium alloycitations
- 2008Composite ceramic bone graft substitute in the treatment of locally aggressive benign bone tumours.citations
- 2006Porous Ti-6Al-4V bone replacement materials produced by Selective Laser Sintering (SLS)
- 2004The effect of diamond like carbon and hydroxyapatite coatings on soft tissue reactions to external fixation screws under load
- 2000Fractographic examination of racing greyhound central (navicular) tarsal bone failure surfaces using scanning electron microscopy
Places of action
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article
Analysis of retrieved growth guidance sliding LSZ-4D devices for early onset scoliosis and investigation of the use of nitinol rods for this system
Abstract
<p><b>Study Design </b>- Analysis of volumetric wear loss of retrieved growth guidance sliding devices LSZ-4D for treatment of early onset scoliosis and laboratory in vitro wear test for comparison of wear resistance of alloys Nitinol, Ti, and cobalt chromium (CoCr).</p><p><b>Objective</b> - To evaluate quantitatively the amount of wear debris from the sliding LSZ-4D device and to investigate the potential of using Nitinol for replacing Ti alloys in spinal instrumentation. To do that, wear resistance of Nitinol, Ti, and CoCr was compared.</p><p><b>Summary of Background Data</b> - There are little data regarding the amount of wear debris associated with growth guidance sliding devices for patients with early onset scoliosis and the wear resistance of superelastic Nitinol compared with Ti and CoCr.</p><p><b>Methods</b> - Volumetric wear loss was measured on LSZ-4D devices made from titanium alloy Ti6Al4V and each consisted of 2 rectangular section (6 × 4 mm) rods and 40 ± 8 fixture elements (20 ± 4 hooks and 20 ± 4 clips) retrieved from 3 patients (implantation period, 3.5-5.8 yr). Images of wear scars were taken on Bruker interferometer microscope and incorporated into MATLAB software. Wear resistance of Nitinol, Ti, and CoCr was studied using reciprocation pin-on-disk wear test in bovine serum at 37°C ± 1°C.</p><p><b>Results </b>- The volume wear rate of LSZ-4D device was found to be 12.5 mm per year from which 5 mm³ per year is the wear debris of the rod and 7.5 mm per year is the contribution of fixtures. Wear resistance of Nitinol is 100 times higher than that of Ti and comparable with that of CoCr.</p><p><b>Conclusion</b> - Application of wear-resistant coatings on Ti components in growth guidance sliding devices for the treatment of early onset scoliosis will be useful. High wear resistance of Nitinol combined with its superelastic and shape memory properties could make application of Nitinol rods for spinal instrumentation beneficial.</p>