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.
Overview. 1  Partial or unicompartmental knee replacement is a surgical procedure used to increase knee function and alleviate chronic knee pain in affected people. During this procedure, a surgeon specifically replaces the damaged portions of the knee, while keeping all healthy bone and cartilage intact.