Patent ID: 7455695
Filing Date: 2008-11-25
Classification: A61F

Abstract:
1. A modular prosthesis kit comprising: a distal prosthesis component including a male joint component, a threaded shaft, a non-threaded stem for insertion within an intramedullary canal of a bone and an axis, wherein the male joint component and threaded shaft are formed concentrically about the axis and wherein the threaded shaft extends proximally from the male joint component and the stem extends distally from the male joint component; a locking nut including a distal end with a threaded bore for receiving the threaded shaft and a radiused, when viewed in cross-section, contact portion extending outwardly and proximally from the threaded bore to a side wall of the locking nut; and a proximal prosthesis component including a body, a female joint component within the body sized to receive the male joint component, a nut-receiving cavity with a radiused, when viewed in cross-section, bottom surface, a side wall substantially equal in height to the side wall of the locking nut, and a shaft-receiving bore opening to the nut-receiving cavity through the radiused bottom surface and to the female joint component and sized to receive the threaded shaft therein; a plurality of differently sized distal prosthesis components each including a male joint component, a threaded shaft, a non-threaded stem for insertion within an intramedullary canal of a bone and an axis, wherein the male joint component and threaded shaft are formed concentrically about the axis and wherein the threaded shaft extends proximally from the male joint component and the stem extends distally from the male joint component, wherein the stem of each of the plurality of distal prosthesis components is a different size than the stems of the other of the plurality of distal prosthesis components; a plurality of proximal prosthesis components each including a body, a female joint component within the body sized to receive the male joint component, a nut-receiving cavity with a radiused, when viewed in cross-section, bottom surface, a side wall substantially equal in height to the side wall of the locking nut, and a shaft-receiving bore opening to the nut-receiving cavity through the radiused bottom surface and to the female joint component and sized to receive the threaded shaft of at least one of the plurality of differently sized distal prosthesis components therein, wherein the body of each of the plurality of proximal prosthesis components is a different size than the body of the other of the plurality of proximal prosthesis components and the female joint components of all of the plurality of proximal prosthesis components are configured to receive the male joint component of each of the plurality of distal prosthesis components; and a plurality of locking nuts each having a diameter and a length and configured to be received on the threaded shaft of each of the plurality of distal prosthesis components, each of the plurality of locking nuts including a radiused, when viewed in cross-section, contact portion extending outwardly and proximally from the threaded bore to a side wall of the locking nut, wherein the diameter of each of the plurality of locking nuts is the same as the diameter of the other of the plurality of locking nuts and the side wall of each of the plurality of locking nuts is of a length different from the length of each of the other of the side walls; and wherein: