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US 2006/0041316 A1Published application
Hip prosthesis comprising a shaft to be fixed in the medullary canal of the femur
AssigneeWaldemar Link GmbH 7 Co. KG
InventorArnold Keller
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Abstract
A hip prosthesis includes a shaft which is configured to be anchored in the medullary canal of a femur and whose distal portion, which is to be anchored in the diaphysis, has a core cross-section which tapers toward the distal end and which, at least on the lateral side and medial side, has longitudinal ribs whose height increases from proximal to distal.
Claims11
A hip prosthesis, comprising a shaft which is configured to be anchored in a medullary canal of a femur and has a distal portion which is configured to be anchored in a diaphysis,
- the shaft having a core cross-section which tapers toward a distal end and which has longitudinal ribs on a lateral side (19) and a medial side whose height increases from a proximal portion of the shaft to a distal end portion of the shaft,
- the shaft core cross-section at a distance of 1 cm from the distal end portion being substantially rectangular, with an axis ratio of at least 1:4, and, near a distal end, having a rib on each of its two lateral edges, the height of which is on average under 2 mm, the boundary of the shaft core cross-section between the two ribs (21) located on the lateral edges not protruding further laterally from the prosthesis than the two ribs located on the lateral edges.
Dependencies are inferred from the claim text.