Patent ID: 9089441
Filing Date: 2015-07-28
Classification: A61F

Abstract:
1. A trial instrument assembly for use in a surgical procedure to replace an orthopaedic joint, the assembly comprising: a. a trial implant having a stem portion for fitting within a prepared cavity in the patient's bone, the stem portion defining a stem axis, and a neck portion that is connected to the stem portion at a mating surface and to protrude from the cavity when the stem portion is disposed within the cavity; and b. a plane guide that extends from the neck portion in a plane that is selected from (i) a plane perpendicular to the stem axis, and (ii) a plane parallel to the stem axis; wherein the plane guide is a sheet of material; wherein the neck portion includes a first groove and a second groove, the first groove arranged at an angle of about 45° from the mating surface and the second groove being perpendicular to the first groove and the neck portion includes a projection adapted to engage one of the first and second grooves.