Asymmetric formation of prosthetic components for the manipulation and suppression of natural frequencies
OwnerRoman Preuss, Thomas Pandorf +3inventors
InventorsRoman Preuss, Thomas Pandorf, Patricie Merkert, Heike Idink, Martin Dietrich
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Abstract
A hip joint prosthesis for implantation in the femur of a patient, wherein the shaft can be coupled with a ball head which in turn can be inserted rotatably in the hemispherical recess of a socket insert. To avoid squeaking the shaft is formed asymmetrically in its outer and/or inner geometry and/or material composition.
Claims11
1-10. (canceled)
A shaft of a hip-joint prosthesis for implantation into the femur of a patient, wherein the shaft has a shaft axis and can be coupled with a ball head which in turn can be inserted in a rotatable manner in the hemispherical recess of a socket insert, wherein the shaft is formed asymmetrically for at least one of an outer geometry, an inner geometry or a material composition thereof.
A shaft according to one of claims 1 to 6, wherein the shaft has inner cavities of differing volume.
Dependencies are inferred from the claim text.