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US 2014/0277557 A1Published application
Femoral component for an implantable hip prosthesis
AssigneeDePuy Synthes Products, Inc.
InventorsJohn M. Armacost, Ryan C. Keefer, Jeffrey A. McAnelly
Life of this patent
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Abstract
An orthopaedic prosthesis for use in a hip replacement surgery includes an implantable stem component. The implantable stem component includes a core and a shell extending over the core. The shell includes a polymeric material and is configured to receive a femoral head component. Metal foam may extend over a portion of the shell.
Claims20
An orthopaedic hip prosthesis, comprising:
- a femoral head component including a spherical surface shaped to engage a prosthetic acetabular component, and
- a femoral stem component, comprising:
- a first shell including a neck configured to be secured to the femoral head component and an elongated body extending distally from the neck, the first shell including a polymeric material,
- a core positioned in the first shell, the core including a first core body extending into the neck of the first shell and a second core body extending into the elongated body of the first shell, the core being formed from a material having a high tensile strength and a high elastic modulus, and
- a second shell extending over a proximal section of the elongated body of the first shell, the second shell being formed from a metallic foam.
2 more elements
An orthopaedic hip prosthesis, comprising:
- an implantable distal stem component including (i) a core formed from a material having a high tensile strength and a high elastic modulus, and (ii) a shell extending over the core, the shell including a tapered post configured to be received in a tapered bore of an implantable head component, wherein the shell includes a polymeric material.
An orthopaedic hip prosthesis, comprising:
- an implantable distal stem component comprising:
- a first shell including a tapered post configured to be received in a tapered bore of an implantable head component and an elongated body extending distally from the tapered post, the first shell being formed from a metal-polymer composite material,
- a core positioned in the first shell, the core being formed from a material having a high tensile strength and a high elastic modulus and including a first core body extending into the tapered post of the first shell and a second core body extending into the elongated body of the first shell, and
- a second shell extending over a proximal section of the elongated body of the first shell, the second shell being formed from a metallic foam and including a porous outer surface shaped to engage a surgically-prepared proximal end of a patient's femur,
- wherein the elongated body includes a distal section shaped to engage the surgically-prepared proximal end of a patient's femur distal of the second shell.
2 more elements
Dependencies are inferred from the claim text.