Compressive properties and creep resistance of a novel, porous, semidegradable poly(vinyl alcohol)/poly(lactic-co-glycolic acid) scaffold for articular cartilage repair

2013 ◽  
Vol 131 (11) ◽  
pp. n/a-n/a ◽  
Author(s):  
Yi Cao ◽  
Dangsheng Xiong ◽  
Yuxiang Niu ◽  
Yi Mei ◽  
Zhaowei Yin ◽  
...  
Keyword(s):  
Articular Cartilage ◽  
Cartilage Repair ◽  
Vinyl Alcohol ◽  
Creep Resistance ◽  
Glycolic Acid ◽  
Poly Vinyl Alcohol ◽  
Compressive Properties ◽  
Articular Cartilage Repair

scholarly journals Design and evaluation of nano-hydroxyapatite/poly(vinyl alcohol) hydrogels coated with poly(lactic-co-glycolic acid)/nano-hydroxyapatite/poly(vinyl alcohol) scaffolds for cartilage repair

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Weiping Su ◽  
Yihe Hu ◽  
Min Zeng ◽  
Mingqing Li ◽  
Shaoru Lin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Double Layer ◽  
Cartilage Repair ◽  
Vinyl Alcohol ◽  
Glycolic Acid ◽  
Mechanical Load ◽  
Poly Vinyl Alcohol ◽  
Primary Role ◽  
Pva Hydrogel

Abstract Background Poly(vinyl alcohol) (PVA) hydrogels have been widely used in synthetic cartilage materials. However, limitations of PVA hydrogels such as poor biomechanics and limited cell ingrowth remain challenges in this field. Methods This work aimed to design novel nano-hydroxyapatite (nano-HA)/poly(vinyl alcohol) (PVA) hydrogels coated with a poly(lactic-co-glycolic acid) (PLGA)/nano-HA/PVA scaffold to counter the limitations of PVA hydrogels. The core, comprising nano-HA/PVA hydrogel, had the primary role of bearing the mechanical load. The peripheral structure, composed of PLGA/nano-HA/PVA, was designed to favor interaction with surrounding cartilage. Results The double-layer HA/PVA hydrogel coated with PLGA/HA/PVA scaffold was successfully prepared using a two-step molding method, and the mechanical properties and biocompatibility were characterized. The mechanical properties of the novel PLGA/HA/PVA scaffold modified HA/PVA hydrogel were similar to those of native cartilage and showed greater sensitivity to compressive stress than to tensile stress. Rabbit chondrocytes were seeded in the composites to assess the biocompatibility and practicability in vitro. The results showed that the peripheral component comprising 30 wt% PLGA/5 wt% HA/15 wt% PVA was most conducive to rabbit chondrocyte adhesion and proliferation. Conclusions The study indicated that the double-layer HA/PVA hydrogel coated with PLGA/HA/PVA scaffold has the potential for cartilage repair.

Articular Cartilage Repair Strategies in the Ankle Joint

2007 ◽  
pp. 283-309 ◽  
Author(s):  
Monika Volesky ◽  
Timothy Charlton ◽  
Jonathan T. Deland
Keyword(s):  
Articular Cartilage ◽  
Ankle Joint ◽  
Cartilage Repair ◽  
Articular Cartilage Repair

BMPs in articular cartilage repair

2002 ◽  
pp. 249-262 ◽  
Author(s):  
Mislav Jelic ◽  
Marko Pecina ◽  
Miroslav Haspl ◽  
Anton Brkic ◽  
Slobodan Vukicevic
Keyword(s):  
Articular Cartilage ◽  
Cartilage Repair ◽  
Articular Cartilage Repair

scholarly journals Returning to Work After Articular Cartilage Repair Intervention: A Systematic Review

2020 ◽  
Vol 8 (3) ◽  
pp. 232596712090552 ◽  
Author(s):  
Puwapong Nimkingratana ◽  
Mats Brittberg
Keyword(s):  
Systematic Review ◽  
Articular Cartilage ◽  
General Population ◽  
Return To Work ◽  
Cartilage Repair ◽  
Rate Of Return ◽  
Osteochondral Allograft ◽  
Articular Cartilage Repair ◽  
Surgical Interventions ◽  
Returning To Work

Background: The process of returning to work after cartilage treatment has not been studied in depth, even though a better understanding of potential outcomes could lead to significant benefits for the general population. Purpose: To determine which surgical interventions are most effective in helping patients return to work after cartilage repair and to identify factors that affect the ability to return to work. Study Design: Systematic review; Level of evidence, 4. Methods: This systematic review followed PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines in analyzing reports on articular cartilage treatment and return to work published from January 1966 (when the first system of classifying articular cartilage injuries based on the mechanism of injuries and type of lesions was developed) to January 2019. General surgical information and available clinical scores were used to assess outcomes. Results: Only 5 studies describing 283 patients were found to be relevant to our objectives and were therefore included in the analysis. Autologous chondrocyte implantation (ACI) and osteochondral allografts were the only 2 procedures for which information was included regarding patient return to work rates. The mean (overall) return-to-work time after a cartilage repair operation was 4.80 ± 3.02 months. ACI was the most common procedure (3 studies; 227 patients). Return to work after ACI or ACI with high tibial osteotomy (HTO) occurred in almost 100% of cases, whereas the rate of return to work was 51.78% for patients who underwent osteochondral allograft ( P < .01); further, patients who had ACI or ACI+HTO returned to work sooner compared with patients who underwent osteochondral allograft. The Knee injury and Osteoarthritis Outcome Score (KOOS) and Single Assessment Numerical Evaluation (SANE) scores were significantly higher in patients who fully returned to work. No significant difference was found in rates of return to work after ACI related to sex, area of the lesion, or size of the defect. Conclusion: The vast majority of published results on articular cartilage repair do not include data on return to work. Although available data on articular cartilage repair in the general population reveal a high rate of return to work, including those patients treated with ACI, the data do not stratify patients by the type and demand of work. No randomized studies have examined return-to-work rates. Hence, authors should include these data in future studies. A refined definition of work intensity, rather than just return to work, may provide a clearer picture of the relative effectiveness of different surgical interventions. To that end, the authors propose a return to work prognostic score called the Prognostic Cartilage Repair Return to Work Score, or PROCART-RTW score.

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