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.
How Is An Individual Patient Evaluated for Knee Replacement? Most total knee replacement patients are 60 to 80 years old -- but there are patients who are younger or older that do very well following surgery. Each individual patient must be evaluated to determine if knee replacement surgery is their best option.