Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1988-02-18
1991-04-16
Green, Randall L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 22, 36441313, A61F 236, A61F 234, A61F 232
Patent
active
050079360
ABSTRACT:
Preoperative planning method for systematically performing a total hip replacement utilizing CT scan data to size acetabular and femoral components, orient the actabular cup, and equalize leg lengths. The method includes one or more of the steps of selecting acetabular cup size according to dimensions revealed by a certain acetabular CT slice, determining stem size of the femoral component according the scanned dimensions of the medullary canal, reaming the acetabulum and orienting the face of the acetabular cup placed therein according to a reference plane defined by three CT-defined reference points on the acetabulum, equalizing leg lengths by performing the femoral neck osteotomy according the preselected component dimensions and bone/cartilage removal. The invention envisions the use of CT and NMR devices to achieve bony contour definitions.
REFERENCES:
patent: 3874003 (1975-04-01), Moser et al.
patent: 4704686 (1987-11-01), Aldinger
William H. Harris, "Surgical Technique Harris/Galante Porous Hip Prosthesis", 1984, pp. 9, 16, 17.
Engh et al., "Biological Fixation of the Porocoat AML Hip", 1984, pp. 12, 14, 15.
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Steven H. Fried, "Acetabular Cup Holder Surgical Technique," 1984, p. 2.
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Cemax, Inc.
Green Randall L.
Iantorno Stephanie
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