Total hip replacement femoral component

Details Total hip replacement femoral component Total hip replacement femoral component

1991-07-26

1993-11-02

Isabella, David

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 22, 623 18, A61F 236, A61F 230

Patent

active

052580334

ABSTRACT:
A total hip replacement femoral component has an outer surface shaped to conform to an acetabular socket and has an internal bore adapted to receive a femoral head. The head has been shaped and dimensioned to provide a spigot to enter the bore and be locked in place by a cement mantle between the bone and the walls of the bore. The head allows the hip component to move further over said spigot and re-lock should the cement creep or thereby any movement in the bone after assembly. The internal bore is inwardly tapered. Thus the taper can be co-axial with the femoral neck, but there may be advantages in orientating the axis of the taper as close to vertical as possible when in position so that it is closer to the average force vector acting on the femoral head during human activity.

REFERENCES:
patent: 4005495 (1977-02-01), Locke et al.
patent: 4123806 (1978-11-01), Amstutz et al.
patent: 4332036 (1982-06-01), Sutter et al.
patent: 4846841 (1989-07-01), Oh

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