Patent ID: 7922728

Claim:
An ancillary tool for implanting an elbow prosthesis in a patient, the tool comprising: at least one trial distal humeral trochlea with a shape representative of at least a portion of an anatomical distal humeral trochlea of the patient, the trial distal humeral trochlea adapted for temporary engagement with proximal anatomical articular surfaces of an ulna and a radius without requiring resection of the anatomical distal humeral trochlea; a guide attached to the trial distal humeral trochlea temporarily engageable with the proximal anatomical articular surfaces of the ulna and the radius, and at least one of the ulna or the radius, wherein the guide comprises a U-shaped support having a first leg and a second leg for mounting the trial distal humeral trochlea such that a central axis of the trial distal humeral trochlea is coaxial with an axis extending from the first leg to the second leg; and at least one cutting guide adapted to prepare at least a proximal end of the ulna or a proximal end of the radius to receive at least one of a proximal ulnar component or a proximal radial component, respectively.