Method for selecting modular implant components

a technology of modular components and implants, applied in the direction of shoulder joints, prostheses, applications, etc., can solve the problems of undesirable removal of hip stems from femoral intramedullary canals, and achieve the effect of quick and easy selection of different modular necks

Inactive Publication Date: 2008-01-24
ZIMMER INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0007]The present invention provides a method for selecting modular neck components for hip implants based on independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length

Problems solved by technology

Typically, the surgeon will only change the neck portion because the hip stem is usually implanted

Method used

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  • Method for selecting modular implant components
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Embodiment Construction

[0020]The present invention generally provides a method for selecting modular neck components for hip implants based on independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length, offset, and / or anteversion. The present method allows the surgeon to quickly and easily select a different modular neck based on an evaluation of one of the variables without requiring reevaluation of the other variables. The method may include preoperative planning in which a template including a grid coordinate system is used, which advantageously provides an intuitive system for the surgeon both preoperatively and during surgery.

[0021]Referring to FIG. 2, a flow chart illustrating steps of method 100 is shown and includes several steps beg...

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Abstract

A method for selecting modular neck components for hip implants based on independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length, offset, and/or anteversion. The present method allows the surgeon to quickly and easily select a different modular neck based on an evaluation of one of the variables without requiring reevaluation of the other variables. The method may include preoperative planning in which a template including a grid coordinate system is used.

Description

BACKGROUND[0001]1. Field of the Invention[0002]The present invention relates to modular components for prosthetic joints. More particularly, the present invention relates to a method for selecting modular neck components for prosthetic hip joints.[0003]2. Description of the Related Art[0004]Orthopedic prosthetic implants are commonly used to replace some or all of a patient's hip joint in order to restore the use of the hip joint, or to increase the use of the hip joint, following deterioration due to aging or illness, or injury due to trauma. In a hip replacement, or hip arthroplasty procedure, a femoral component is used to replace a portion of the patient's femur, including the femoral neck and head. The femoral component is typically a hip stem, which includes a stem portion positioned within the prepared femoral canal of the patient's femur and secured via bone cement, or by a press-fit followed by bony ingrowth of the surrounding tissue into a porous coating of the stem portio...

Claims

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Application Information

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IPC IPC(8): A61B5/05
CPCA61B5/107A61F2250/0089A61B19/026A61B19/0271A61B2019/0278A61F2/0095A61F2/3609A61F2/38A61F2/40A61F2/46A61F2002/30332A61F2002/30604A61F2002/30616A61F2002/30708A61F2002/30714A61F2002/30948A61F2002/30963A61F2002/3611A61F2002/3625A61F2002/365A61F2002/3652A61F2002/4633A61F2220/0033A61F2250/0084A61B5/4528A61B50/30A61B50/33A61B2050/3008A61F2002/3071
Inventor MEULINK, STEVEN L.
Owner ZIMMER INC
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