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.
A prosthesisâwhich may also be called an implantâtakes the place of the damaged area of the knee, leaving the other compartments intact. (Partial knee replacement surgery may also be referred to as partial knee resurfacing, unicondylar knee surgery, unicondylar knee replacement, or unicondylar knee arthroplasty.)