Patent ID: 6994731

Claim:
An elongate, integrally formed prosthetic bone implant for cemented fixation within a bone, said implant having a distal tip portion, a proximal neck portion and an elongate stem portion extending from the neck portion to the tip portion, the stem portion having a proximal or metaphyseal end region which adjoins the neck portion, said end region tapering distally in the medio-lateral plane, wherein the stem portion of the implant has a first part adjacent said end region the proximal neck portion having a profile in at least one of the medio-lateral and or sagittal planes which tapers distally to a region intermediate the length of the stem portion at a first angle of taper, said first angle of taper being substantially constant along said first part, and a second part distal of the first part having a profile in that same at least one of the medio-lateral and or sagittal planes which tapers distally from the region intermediate the length of the stem portion at a second angle of taper, wherein the first angle of taper is greater than the second angle of taper said first and second parts extending substantially coaxially in the medio-lateral plane and said first part, said second part and said end region extending substantially coaxially in the anterior-posterior plane.