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.
Knee Replacement Surgery. The knee joint is made up of three bones, the femur and tibia, which are the upper and lower leg bones, respectively, and the patella, or kneecap. A total knee replacement is surgery to remove damaged portions of those three bones and replace them with metal and plastic.