According to Arthritis Research UK, there are two major types of hip replacement surgery: the total hip replacement and the metal-on-metal hip resurfacing. The former is done using metal, plastic (polyethylene) or ceramic replacement parts. With resurfacing, the original ball and socket are reshaped and capped using metal prosthesis.
In a hip replacement procedure, the ball or head of the femur is removed and replaced by a new one. The socket or acetabulum can be roughened to make it accept the new ball, or it can be replaced too. Ball and socket replacements can be used in different combinations, namely: metal-on-plastic, ceramic-on-plastic, ceramic-on-ceramic and metal-on-metal, states Arthritis Research UK.