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.
Total Knee Replacement makes up about 90 percent of all knee replacement procedures. During TKR, a surgeon repairs your knee joint by covering the thighbone with a metal covering and encasing the shinbone with plastic. The prosthesis replaces the rough and irregular surfaces of the worn bone with smooth surfaces.