The most important feature of a hip replacement is the two surfaces that make up the bearing surface of the hip. The commonest replacements use a metal head on the femoral component and a plastic shell in the acetabulum. It is, however, possible to also use ceramic heads with a plastic shell or ceramic heads and ceramic shells. There are different advantages and disadvantages to each option, which can be discussed in the outpatient setting.
Mr Allen uses the CPT hip from Zimmer and the Corail Pinnacle system from Depuy-Synthes.