Arthroplasty Instruments and Associated Method

摘要

A method of performing arthroplasty includes preparing a head of a long bone to receive a prosthesis using a reamer. The reamer includes a first cutting structure having an inner concave surface that defines a first cavity and terminates in a generally circular leading edge. The inner concave surface includes a first cutting feature that is spaced apart from the leading edge. An elongate member extends from the first cutting structure into the first cavity toward the leading edge that includes a second cutting feature. A second cutting structure is secured to the elongate member and positioned within the first cavity. The second cutting structure extends outwardly from the elongate member toward the inner concave surface and includes a third cutting feature.

主权项

1. A method for performing arthroplasty on the head of a long bone, the method comprising:
preparing a head of the long bone to receive a prosthesis using a reamer, the reamer including:
a first cutting structure having an inner concave surface that defines a first cavity and terminates distally in a generally circular leading edge, the inner concave surface including a first cutting feature that is spaced apart from the leading edge, the first cutting feature comprising a plurality of openings that extend through the inner concave surface, each of the openings having a cutting edge;an elongate member extending from the first cutting structure into the first cavity toward the leading edge, the elongate member including a second cutting feature, the second cutting feature being located at least partially within the first cavity; anda second cutting structure secured to said elongate member and positioned within the first cavity, the second cutting structure extending outwardly from the elongate member toward the inner concave surface and including a third cutting feature; and implanting the prosthesis in the head of the long bone.