Shoulder arthroplasty system
AssigneeZimmer, Inc.
InventorsRoy C Wiley, Brian C. Hodorek
Life of this patent
Estimating the term…
Abstract
An implant system for total shoulder arthroplasties, hemi shoulder arthroplasties, and “reverse” total shoulder arthroplasties including a humeral stem having an enlarged head portion with interfaces adapted to removably receive various modular interchangeable components, such as articulating liners, spacers, and adapter inserts. The humeral stem functions as a universal platform that may be used in either conventional or “reverse” total shoulder arthroplasties, as well as hemi shoulder arthroplasties, and may remain implanted in place during a revision in which the implant system is converted between the foregoing configurations, for example.
Claims18
A method of performing a shoulder arthroplasty procedure, comprising:
- preparing a planar surface of a glenoid of a patient;
- seating a planar medial side of a substantially cup-shaped body against the planar surface of the glenoid, the body defining a fastener hole including an at least partially spherical seat and defining a hole opening in the planar medial side;
- inserting a fastener into the fastener hole, wherein the fastener includes an at least partially spherical head polyaxially movable relative to the seat and a threaded shank engageable to the planar surface of the glenoid;
- and
- interfacing a tapered bore of a glenosphere to a cooperatively tapered annular wall extending from a lateral side of the body to lockingly secure the glenosphere to the body, the tapered bore and the tapered annular wall providing the sole securement means between the glenosphere and the body.
A method of performing a shoulder arthroplasty procedure, comprising:
- preparing a planar surface of a glenoid of a patient;
- seating a planar medial side of a substantially cup-shaped body against the planar surface of the glenoid, the body defining a central longitudinal axis and including a first fastener hole, a second fastener hole, a stem extending from the planar medial side, wherein the planar medial side extends radially outwardly from the stem to an outer periphery of the body, and a pad or coating of a highly porous biomaterial extending from the outer periphery of the body and across the planar medial side and the stem, the highly porous biomaterial being a bone ingrowth-receptive material;
- inserting a first polyaxial fastener into the first fastener hole along a first trajectory, the first polyaxial fastener including an at least partially spherical head;
- inserting a second polyaxial fastener into the second fastener hole along a second trajectory, the second polyaxial fastener including an at least partially spherical head;
- and
- lockingly fitting a glenosphere to the body solely via a taper lock connection, wherein the taper lock connection is formed by interfacing a tapered interior bore of the glenosphere with a cooperatively tapered annular wall extending from a lateral side of the body.
A method of performing a shoulder arthroplasty procedure, comprising:
- preparing a planar surface of a glenoid of a patient;
- seating a planar medial side of a substantially cup-shaped body against the planar surface of the glenoid, the body defining a central longitudinal axis and including a first fastener hole and a second fastener hole;
- drilling a first pilot hole along a first trajectory extending through the first fastener hole, the first trajectory defining a first angle with the central longitudinal axis;
- drilling a second pilot hole along a second trajectory extending through the second fastener hole, the second trajectory defining a second angle with the central longitudinal axis;
- inserting a first polyaxial fastener into the first fastener hole along the first trajectory;
- inserting a second polyaxial fastener into the second fastener hole along the second trajectory;
- and
- securing a glenosphere component to the body solely via a taper lock connection, wherein the taper lock connection is formed by interfacing a tapered bore of the glenosphere component with a cooperatively tapered annular wall extending from a lateral side of the body.
Dependencies are inferred from the claim text.