Extended articulation orthopaedic implant

A kit for use in performing arthroplasty, the kit comprising:

• a prosthetic implant;
• and
• an instrument for use in removal of the prosthetic implant for use performing arthroplasty, the instrument including a body, a first member connected to the body, the first member including a contact portion for engagement with the implant at a first position, a second member connected to the body, the second member being moveable with respect to the first member, the second member including a contact portion for engagement with the implant at a second position, spaced from the first position, and an urging member for urging the contact portion of the first member toward the contact portion of the second member, the urging member including a first linking member pivotally coupled to the body and the first member, a second linking member pivotally coupled to the body and the second member, a third linking member coupled to the first and second linking members, and a shaft having a longitudinal axis and coupled to the third linking member, such that as the shaft is moved along the longitudinal axis, the first and second linking members pivot relative to the body, thereby causing the first and second members to pivot relative to the body, wherein the contact portion of the first member have an inner contact surface and an outer contact surface defined by an included angle of between about 5 and about 45 degrees.

A method for removing a surface replacement implant from a long bone, the method comprising the steps of:

• using an instrument having a body, a first member and a second member and an urging member, the first member being connected to the body and including a contact portion for engagement with the implant at a first position, the second member being connected to the body and being moveable with respect to the first member, the second member including a contact portion for engagement with the implant at a second position, spaced from the first position, the urging member including a first linking member pivotally coupled to the body and the first member, a second linking member pivotally coupled to the body and the second member, a third linking member coupled to the first and second linking members, and a shaft having a longitudinal axis and coupled to the third linking member, such that as the shaft is moved along the longitudinal axis, the first and second linking members pivot relative to the body, thereby causing the first and second members to pivot relative to the body;
• utilizing the urging member to separate the first contact portion from the second contact portion;
• placing the instrument into alignment with the implant;
• advancing the first contact portion toward the second contact portion with the urging member;
• and
• retracting the instrument and implant from the long bone.