摘要:
A patient-specific acetabular guide can be used for preparing an acetabulum of a patient to receive an acetabular implant. The acetabular guide includes a patient-specific engagement surface designed to be complementary and mateable with a corresponding surface of the patient's pelvic anatomy. The acetabular guide is designed during a pre-operative plan for the patient by a three-dimensional reconstruction of the anatomy of the patient using two-dimensional medical images. The patient-specific engagement surface has a first portion mateable with a portion of the acetabulum of the patient. The acetabular guide includes a guiding element that extends from the acetabular guide opposite to the first portion of engagement surface. The guiding element defines a bore designed to be oriented along an alignment axis for an acetabular implant when the acetabular guide is engaged to the acetabulum.
摘要:
A method for preparing an implant having a porous metal component. A loose powder mixture including a biocompatible metal powder and a spacing agent is prepared and compressed onto a metal base. After being compressed, the spacing agent is removed, thereby forming a compact including a porous metal structure pressed on the metal base. The compact is sintered, forming a subassembly, which is aligned with a metal substrate portion of an implant. A metallurgical bonding process, such as diffusion bonding, is performed at the interface of the subassembly and the metal substrate to form an implant having a porous metal component.
摘要:
A method of imaging a body part of a patient can include acquiring a first, second and third sets of image data from a first, second and third anatomical reference areas. The first, second and third sets of image data can then be compiled to produce a legend of the body part. The legend can have positional information of the first, second and third anatomical reference areas. A fourth, fifth and sixth sets of image data of the first, second and anatomical reference areas can be acquired. The fourth, fifth and sixth sets of image data can have increased image information relative to the first, second and third sets of image data, respectively. The locations of the fourth, fifth and sixth sets of image data relative to the first, second and third sets of image data can be correlated using the legend to determine a characteristic of the body part.
摘要:
A prosthesis to replace a portion of the anatomy, such as the acetabulum, can include a first portion. A second prosthesis portion can be positioned relative to the shell to provide the bearing surface to articulate with a femoral head prosthesis or femoral head. The second prosthesis portion can include a connection portion to engage a connection portion in the shell.
摘要:
A method of selecting a patient matched hip joint prosthesis includes identifying a plurality of first parameters of a hip joint anatomy of the patient. The method also includes selecting a standard modular neck member (16) from a set of different standard modular neck members to substantially match the first parameters of the hip joint anatomy of the patient. Moreover, the method includes performing a hip joint mechanical analysis using the selected standard modular neck member. Further, the method includes choosing for implantation either the selected modular neck member, a different standard modular neck member, or a custom designed neck member based on the hip joint mechanical analysis.
摘要:
The present invention discloses a method of making a bearing component of a medical implant suitable for use as an artificial joint, the method comprising: - preheating a crosslinked polymeric bulk material to a temperature 80°C and below the melting point of the polymeric material, wherein the bulk material is characterized by having an axial direction and a transverse direction orthogonal to the axial direction and is further characterized by a dimension d1 in the transverse direction; - applying deforming pressure to the bulk material to change the dimension from d1 to d2, where d2 is less than d1; and - machining the bearing component from the extruded bulk material, wherein the load bearing axis of the bearing component corresponds to the axial direction of the crosslinked bulk material. Preferably, the crosslinked polymeric bulk material is crosslinked ultra high molecular weight polyethylene (UHMWPE).