Standard library functions. The standard library functions are built-in functions in C programming to handle tasks such as mathematical computations, I/O processing, string handling etc. These functions are defined in the header file. When you include the header file, these functions are available for use.
Knee replacement. Knee replacement, also known as knee arthroplasty, is a surgical procedure to replace the weight-bearing surfaces of the knee joint to relieve pain and disability. It is most commonly performed for osteoarthritis,[1] and also for other knee diseases such as rheumatoid arthritis and psoriatic arthritis.
Arthrocentesis: Fluid is removed from your knee to relieve joint pressure. Arthroscopy: Loose or damaged tissue is removed from around the knee. Joint replacement: You can get a replacement knee joint if it becomes clear that your knee is not getting any better and your knee pain is intolerable.