An artificial hip joint is the prosthesis which consists of a Socket, aBall and a Stem. This prosthesis is used to replace the damaged hipjoint.

1. Socket (or Cup) is usually made up of two parts, an outer metalshell and inner smooth surface called a liner. The entire socket mayalso be made of plastic. The socket is press fit into the bone usingscrews or fixed using specialized bone cement.
2. Ball (or Head of femur) is made of stainless steel alloy or ceramic material and fits perfectly into the Socket / Cup.
3. The Stem is also made of stainless steel alloy and fixed into the thigh bone (Femur) which could either be cemented or press fit without cement. The stem mounts the Ball / Head on top of it.