查看文章

One of the most significant current discussions in orthopedic is the total joint replacements especially hip and knee and the increasing trend to replace degraded and destroyed biological materials by artificial organs. It is estimated that approximately 1 million hip replacements and 250,000 knee replacements are carried out per year [1]. This number is expected to double between 1999 and 2025 as a result of aging populations worldwide and growing demand for a higher quality of life [2]. Another statistical data estimated that by the end of 2030, the number of total hip replacements will increase by 174% and total knee arthoplasties is predicted to grow by 673% from the present rate [3]. An increasing trend of the number of knee replacements in different countries over the last 10–15 years is shown in fig 1.