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 doctor usually recommends total knee replacement surgery if all three of the jointâs compartments are damaged. This procedure replaces the end of the tibia, femur and the back side of the patella. During a total knee surgery, the surgeon makes an incision that is between 8 and 12 inches to expose the knee joint.