US 6,673,115 B2Granted

Anatomic glenoid shoulder prosthesis together with methods and tools for implanting same

AssigneeStryker Technologies Corporation

InventorsHerbert Resch, Damon Servidio, Peter Nuijten

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Abstract

A glenoid component includes an oval body having a concave lateral articulating surface and an opposing medial surface with a keel extending from the medial surface. The keel extends along a line which is anteriorly offset from the center line of the concave surface and is not collinear with any radius of the concave surface. New methods and tools are provided for the implantation of the glenoid component. Sizer drill guides are provided with an alignment arm which assures that the anterior/posterior angle of the pilot hole is approximately 65 degrees. An improved reamer tool is provided which allows the practitioner to attach a reamer head of selected size to the reamer rather than choosing among several reamers of different size at the time of the procedure. A new keel drill guide is provided which locates three drill guide holes in a plane which is offset approximately 2 mm anterior of the pilot hole. A new broach tool is provided for connecting the three holes and form a triangular or trapezoidal cavity for the keel. Methods for installing the glenoid component and using the tools are also disclosed.

Claims28

Dependent claims

A method of implanting a prosthetic glenoid component in a scapula, the glenoid component having a medially extending keel which is anteriorly offset from the center of the glenoid component, said method comprising:

selecting an appropriately sized drill guide having a drill template which approximates the size of the glenoid component to be implanted and having a central through bore for locating a pilot hole in the scapula;
placing the drill template against the glenoid surface of the scapula;
drilling through the through bore of the drill template to form a pilot hole in the scapula;
selecting an appropriately sized reaming tool having a reaming surface which approximates the size of the glenoid component to be implanted and having a central guide pin dimensioned to fit in the pilot hole;
locating the guide pin in the pilot hole;
creating a recess in the glenoid surface of the scapula with the reaming tool;
selecting an appropriately sized keel drill guide having a drill template which approximates the size of the glenoid component to be implanted and having a through bore which is anteriorly offset from the center of the drill template;
placing the keel drill template against the recess in the glenoid surface of the scapula;
drilling through the keel drill guide drill template to form a keel receiving hole which is anteriorly offset from the center of the recess in the glenoid surface of the scapulas;
implanting the prosthetic glenoid component in the scapula.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/059,617Filed 29 Jan 2002 · division
Priority: 9 Sep 1997
Published: US 2002/0082702 A127 Jun 2002
Granted: 6 Jan 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification24 codes

A61F 2/4081
For shoulders: glenoid components, e.g. cups
A61B 17/1604
Instruments for performing osteoclasis; Drills or chisels for bones; Trepans: chisels; Rongeurs; Punches; Stamps
A61B 17/1659
Instruments for performing osteoclasis; Drills or chisels for bones; Trepans: surgical rasps, files, planes, or scrapers
A61B 17/1684
For particular parts of the body: for the shoulder