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Showing 1 to 13 of 13 for “"microfracture"”.
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The effect of distance between hole and hole to the structural stability of subchondral bone in the microfracture surgery
… recently with varying results and indications. microfracture represents a frequently used technique used to attempt repair of symptomatic articular cartilage defects of the knee. Recent studies point towards the advantage of greater cell drainage after exposure of subchondral bone layer shoud …
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Single-dose growth factor treatments to enhance cell recruitment and neotissue integration in an augmented microfracture cartilage repair model
… The current gold standard of care, microfracture surgery, induces an endogenous repair response, but typically results in poorly integrated fibrocartilage, rather than native hyaline cartilage. The objective of this thesis was to test the hypothesis that a self-assembling peptide …
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토끼 모델을 이용한 미세절골술 및 소파 관절 성형술 후 세포외 기질막 첨가의 유용성
… 1. Membrane Preparation 5 2. Animal Models 5 3. Microfracture and Abrasion Arthroplasty 6 4. Gross and Histologic Analysis 7 C. Statistical Analysis 8 III. RESULTS 9 A. In vitro : Colony Frequency 9 B. In vivo : Membrane covering on Chondral defect 9 C. Gross and Histological Analysis 10 1. 4 …
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The influence of ECM on mesenchymal stromal/stem cell activity and their interactions with monocytes/macrophages
… cartilage damage, known as marrow stimulation or microfracture, aims to repair this damage by promoting endogenous healing. However, the resulting repair tissue often lacks the properties of native cartilage, raising questions about the long-term effectiveness of this approach. Therefore, to …
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Shear Fracture Growth in Granular Rocks and Porosity-Permeability Relationships in Mudstones
… how mudstone permeability might evolve during microfracture network growth or macrofracture propagation upon fluid injection. My results suggest that the growth of a distributed microfracture network results in greater vertical permeability increase than a single macrofracture upon fluid …
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Ductility in high chromium super-ferritic alloys
The competition between microfracture and plastic flow has been studied in relation to the thermomechanical processing parameters and minor element chemistry of wrought super-ferritic alloys based on a composition of Fe-40wt% Cr. These alloys have been developed for corrosion-resistant …
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An abrasive-corrosive wear evaluation of some aluminium alloys
… half the abrasion resistance of mild steel. Poor microfracture properties of Al-Si cast alloys were observed as a result of coarse and brittle silicon rich phases contained in the aluminium matrix. Non heat-treatable wrought alloys exhibit ductile micro-deformation characteristics whilst …
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Application of endostatin using nonviral gene delivery toward the regeneration of articular cartilage
… autologous chondrocyte implantation and microfracture, suggesting that a cell-seeded scaffold is a viable option for cartilage repair. There was no significant benefit of multiple treatments of OP-I on chondral defects. Neovascularization was observed in the largely fibrous reparative …
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Wear mechanisms of chemically crosslinked hydrogels under mild abrasion
… negligible effects. Considering that wear is a microfracture process, by relating the wear rate of hydrogels with varying concentrations of polymer and crosslinker to their corresponding threshold fatigue fracture, an expression for predicting wear rate for single network chemically crosslinked …
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The role of the bone marrow niche and G-CSF in osteochondral repair
… for osteochondral repair, such as drilling or microfracture of the subchondral bone, are thought to restore cartilage by delivering bone marrow cells to the defect site. However, the specific identity or contribution of these cells to the repair process is not well understood. Mesenchymal …
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Mechanical Design of Selected Natural Ceramic Cellular Solids
… widening of the damage bands through progressive microfracture of branches at the boundaries contributes to the observed high plateau stress during compression, thereby contributing to its high energy absorption (17.7 kJ/kg), which is comparable and even greater than many synthetic metal- and …
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Seismic precursor identification method integrating acoustic emission physical models and multi-source data
… for cross-scale precursor identification, from microfracture to macro-earthquake. The research findings can provide new scientific basis and technical pathways for earthquake early warning
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Impact of slickwater fracturing fluid compositions on the petrophysical properties of shale and tightsand
… The friction reducer flow behavior in microfractures was studied firstly, including size effect, concentration effect, wettability effect, and etc. Consequently, various additives impact on the petrophysical properties on tight sand was examined, such as surface contact angle, gas phase …