Artificial blood vessels are commonly applied in the treatment and reconstruction surgeries of cardiovascular diseases, which have a considerable clinical demand. Using a 6 mm diameter as a threshold, they are categorized into large- and small-diameter types. Calcification is one of the factors affecting whether artificial blood vessels can successfully be transplanted and function. The occurrence of calcification after implantation may lead to graft failure, particularly compromising the long-term patency of small-diameter grafts. Therefore, focusing on the research of calcification mechanisms and anti-calcification strategies for artificial blood vessels is of great importance. In this paper, we summarized the possible calcification mechanisms of artificial vessels and methods to prevent or delay post-implantation calcification, with the aim of providing insights for future research on anti-calcification artificial vessels.
Objective To illustrate the effect and complication of orthopedic applications for biodegradable and absorbable internal fixation of fractures, and to indicate the existent problem and research aspect currently. Methods The recent literatures on orthopedic applications and study of biodegradable and absorbable internal fixation for fractures were reviewed. The effect of biodegradable materials on bone healing was summarized. Results It is good for the stability of fracture fixation and result of treeatment. The biodegradable and absorbable internal fixation fractures had no adverse effect on bone healing. Conclusion There will be more widespread application for biodegradable and absorbable materials in orthopedics, but the intensive research should be carried out to prevent its complication.
