Method and apparatus for preparing a glenoid surface
First Claim
1. A method of providing a reference to establish version in a glenoid of a scapula, the glenoid including a glenoid surface, the scapula including an anterior surface, said method comprising the steps of:
- aligning a guide with a glenoid of a scapula, the guide including a glenoid contact surface and an anterior scapula contact surface, said step of aligning a guide with a glenoid of a scapula comprising the steps of;
establishing a glenoid reference point on the glenoid surface;
aligning the guide with said glenoid reference point;
placing the glenoid contact surface of the guide in contact with the glenoid; and
rotating the guide substantially about said glenoid reference point to move the anterior contact surface of the guide into a position where the anterior scapula contact surface is supported by the scapula, while maintaining alignment of the guide with said glenoid reference point.
2 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for facilitating shoulder arthroplasty by providing a reference to establish version of the glenoid. In one form of the invention, a guide for positioning a guide pin to facilitate implantation of a glenoid prosthesis is provided. To properly position the guide pin, the guide is first oriented with respect to the scapula. A portion of the guide is positioned over the approximate center of the glenoid surface and another portion of the guide is positioned against the anterior surface of the scapula. After the guide is properly positioned, the guide pin is inserted through an aperture in the guide and anchored in the glenoid. Thereafter, the guide pin can serve as an alignment guide for other devices used to modify the glenoid surface. For example, a reamer having a cannulated central shaft can be placed over the guide pin and utilized to resurface the glenoid.
252 Citations
14 Claims
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1. A method of providing a reference to establish version in a glenoid of a scapula, the glenoid including a glenoid surface, the scapula including an anterior surface, said method comprising the steps of:
aligning a guide with a glenoid of a scapula, the guide including a glenoid contact surface and an anterior scapula contact surface, said step of aligning a guide with a glenoid of a scapula comprising the steps of; establishing a glenoid reference point on the glenoid surface; aligning the guide with said glenoid reference point; placing the glenoid contact surface of the guide in contact with the glenoid; and rotating the guide substantially about said glenoid reference point to move the anterior contact surface of the guide into a position where the anterior scapula contact surface is supported by the scapula, while maintaining alignment of the guide with said glenoid reference point. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of engaging a guide pin with a glenoid of a scapula, the glenoid including a glenoid surface, said method comprising the steps of:
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positioning a guide over the glenoid surface, said guide including an aperture; positioning a bushing in said guide aperture, said bushing including an aperture; inserting a guide pin through said bushing aperture; engaging said guide pin with said glenoid surface; removing said bushing from said guide by sliding said bushing along said guide pin; and removing said guide from said guide pin. - View Dependent Claims (8, 9)
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10. A method of providing a reference to establish version of a glenoid of a scapula, the glenoid including a glenoid surface, the scapula including an anterior surface, the scapula further including a scapular neck, the scapular neck defining a neck axis, said method comprising the steps of:
aligning a guide with the glenoid of the scapula, the guide including an anterior scapula contact surface, said step of aligning a guide with the glenoid of the scapula comprising the steps of; establishing a glenoid reference point on the glenoid surface; aligning the guide with said glenoid reference point; and positioning the anterior scapula contact surface in contact with an anterior scapula reference point, the anterior scapula reference point and the glenoid reference point defining a guide axis substantially collinear with the neck axis. - View Dependent Claims (11, 12, 13, 14)
Specification