Surgical tool

摘要

An alignment trial system for a hip prosthesis comprising: (a) a trial femoral prosthesis (2) comprising a head component (16), a neck component (4) and a stem component (6); and (b) a trial acetabular cup prosthesis (3) wherein the head component (16) of the trial femoral prosthesis (2) and the trial acetabular cup prosthesis (3) include interlocking engagement formations and wherein the trial acetabular cup prosthesis includes means to facilitate the formation of a bore in the pelvis.