Modular glenoid assembly
AssigneeDePuy Orthopaedics, Inc.
InventorsJeffrey M. Ondrla, James A. Caywood
Life of this patent
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Abstract
A modular glenoid assembly is provided for attachment to a glenoid surface of a scapula. The modular glenoid assembly includes a base adapted to couple with the glenoid surface and a bearing insert. The base includes a lip that defines a channel. The bearing insert includes a bearing surface adapted to engage a head portion of a humeral component and a tab. The tab is formed to be received within the channel and engage the lip when the insert is moved in a superior direction into position against the base.
Claims19
A modular glenoid assembly for attachment to a glenoid surface of a scapula to provide a bearing surface, the modular glenoid assembly comprising:
- a base having (i) a lower surface adapted to couple with the glenoid surface, (ii) an upper surface, (iii) a superior end, (iv) an inferior end, (v) a center portion, (vi) a perimeteral edge, and (vii) a lip which defines a channel, wherein the lip extends around a portion of the perimeteral edge at the superior end;
- and
- a bearing insert including (i) a bearing surface adapted to slidably engage a head portion of a humeral component, and (ii) a tab formed to be engaged within the channel of the lip when the insert is moved into position against the base,
- wherein both the lip and the channel are generally U-shaped.
A modular glenoid assembly comprising:
- a metal base including a lower surface, an upper surface, an inferior end, a superior end, a center portion, a perimeteral edge, at least one peg extending from the lower surface, and a lip extending about a portion of the perimeteral edge at the superior end and defining a channel;
- and
- a plastic bearing insert including a bearing surface adapted to slidably engage a head portion of a humeral component, an opposite lower surface facing the upper surface of the base, and a tab extending about a portion of the lower surface, the tab being received in the channel from a first direction to a second direction to mount the insert on the base,
- wherein both the lip and the channel are generally U-shaped.
A method of coupling a glenoid assembly to a glenoid surface of a scapula, the glenoid surface having a superior portion and an inferior portion, comprising the steps of:
- providing a base of the glenold assembly, the base including a first connector portion;
- coupling the base to the glenoid surface;
- providing an insert of the glenoid assembly, the insert being configured to contact a head portion of a humeral component, and further the insert having a second connector portion;
- and
- engaging the first connector portion with the second connector portion so as to couple the insert to the base,
- wherein (i) movement from the inferior portion to the superior portion of the glenoid surface defines a superior direction, and (ii) the insert is moved from the inferior portion toward the superior portion in relation to the base in the superior direction during the engaging step.
A method of coupling a glenoid assembly to a glenoid surface of a scapula, the glenoid surface having a superior portion and an inferior portion, comprising the steps of:
- providing a base of the glenoid assembly, the base including a lip;
- coupling the base to the glenoid surface;
- providing an insert of the glenoid assembly, the insert being configured to contact a head portion of a humeral component, and further the insert having a tab;
- and
- engaging the tab within the lip so as to couple the insert to the base,
- wherein (i) movement from the inferior portion to the superior portion of the glenoid surface defines a superior direction, and (ii) the insert is moved from the inferior portion toward the superior portion in relation to the base in the superior direction during the engaging step.
A method of coupling a glenoid assembly to a glenoid surface of a scapula, the glenoid surface having a superior portion and an inferior portion, comprising the steps of:
- providing a metal base of the glenoid assembly, the metal base including a lip extending about a portion of an upper surface of the metal base and defining a channel;
- coupling the metal base to the glenoid surface;
- providing an insert of the glenoid assembly, the insert being configured to contact a head portion of a humeral component, and further the insert having a tab extending about a portion of a lower surface of the insert;
- and
- engaging the tab within the channel so as to couple the insert to the base,
- wherein (i) movement from the inferior portion to the superior portion of the glenoid surface defines a superior direction, and (ii) the insert is moved in the superior direction during the engaging step from the inferior portion toward the superior portion of the glenoid surface.
Dependencies are inferred from the claim text.