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.
The bicompartmental knee replacement is an option for people with knee osteoarthritis of the medial and patellofemoral compartments. Compared to total knee replacement, the unicompartmental and bicompartmental knee replacements preserve normal bone and the two cruciate ligaments.