Patent ID: 7247171
Filing Date: 2007-07-24
Classification: A61B,A61F

Abstract:
1. An implant system for replacing the proximal portion of a femur having a substantially intact natural femoral neck, medial side and lateral side, the implant comprising: a plurality of modular components of varying sizes within anatomical ranges for accommodating varying patient body dimensions, the components comprising: a body member having a medial end, a lateral end and a longitudinal axis extending between the medial and lateral ends, the body member being configured for positioning, in use, in a natural femoral neck, and having a first engagement surface on a surface thereof comprising a recess, a joining portion on the medial end and at least one passage therethrough in a direction transverse to the longitudinal axis of the body member; a head member having a domed portion configured for positioning, in use, in a natural or prosthetic acetabulum and a joining end for attachment to the joining portion of the body member; a rod having a proximal end, a distal end and a longitudinal axis extending between the distal and proximal ends thereof, the rod being configured for positioning, in use, in the intramedullary canal of a femur, the rod having a second engagement surface comprising a protrusion configured for complementary engagement with the recess of the first engagement surface of the body member for securing the body member against rotation about the longitudinal axis of the body member, the rod having at least one bore extending in the proximal end thereof, each such bore being positioned for coaxial alignment, in use, with a corresponding one of the at least one passage through the body member; at least one locking member, each such locking member configured for insertion, in use, through and engagement with one of the at least one passage of the body member and the at least one bore of the rod in alignment therewith; and, at least one passage through the rod in a direction transverse to the longitudinal axis of the rod.