Ancillary tool for fitting an ulnar component and/or a radial component of an elbow prosthesis

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 is 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 including a support having a first leg, a second leg terminating in a ring and a third leg connecting the first leg and the second leg, and a tab extending from the third leg and having a first arm and a second arm, wherein the second arm is substantially perpendicular to the first arm, and wherein the guide is adapted to be positioned with respect to the trial distal humeral trochlea, and at least one of the ulna or the radius;
• 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;
• and
• a securing structure adapted to immobilize the guide with respect to the ulna.

An ancillary tool for implant an elbow prosthesis in a patient, the tool comprising:

• a trial humeral trochlea having a shape corresponding to an anatomical humeral trochlea of the patient such that the trial humeral trochlea is configured to abut anatomical articular surfaces of an ulna and a radius of the patient;
• a guide attached to the trial humeral trochlea , the guide including,
• a first leg maintaining the trial humeral trochlea;
• and
• a second leg;
• wherein, a central axis of the trial humeral trochlea is coaxial with an axis extending from the first leg to the second leg;
• at least one cutting guide maintained by the second leg;
• and
• a cutter received in the cutting guide such that the cutter is positioned for cutting at least one of a proximal end of the ulna or a proximal end of the radius while the trial humeral trochlea is abutted with the anatomical articular surfaces of the ulna and radius.