Patent ID: 8361162

Claim:
An orthopaedic joint prosthesis implant kit comprising: a stem component of an orthopaedic joint prosthesis intended for articulation with a mating component of the joint, having a distal end and a proximal end, and a neck part at the proximal end, the stem component being configured for fixation in a bone cavity using bone cement material with the distal end within the cavity and the proximal end at the opening of the cavity, and with the neck part protruding from the cavity towards the mating component of the joint; and a positioning kit for controlling the transverse position of the stem component within the cavity at the proximal end of the component, comprising: i. at least two spacers for location between the wall of the cavity and the stem component at its proximal end to maintain a separation between the cavity wall and the stem component, wherein, when located between the stem component and the cavity wall, each of the spacers extends around not more than 10% of the periphery of the stem component; and ii. a delivery device attached to the at least two spacers for locating the spacers between the cavity wall and the proximal end of the stem component relative to the neck part of the stem component.