Augmented glenoid component having an interrupted surface and associated method for securing the augmented glenoid component to a glenoid surface of a scapula

An augmented glenoid component for securement to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, the augmented glenoid component comprising:

• a body;
• a first surface on said body and configured to contact the glenoid surface of the scapula;
• a second surface on said body and configured to be contacted by the head portion of the humerus;
• and
• a buttress formed in said first surface of said body,
• wherein said body further includes anchoring adapted to penetrate the glenoid surface of the scapula, and
• wherein said anchoring extends from said first surface and said buttress.

An augmented glenoid component for securement to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, the augmented glenoid component comprising:

• a body;
• a first surface on said body and configured to contact the glenoid surface of the scapula;
• a second surface on said body and configured to be contacted by the head portion of the humerus;
• and
• a buttress formed in said first surface of said body,
• wherein said body comprises a backing member having said first surface of said body, said second body surface of said body, and said buttress defined therein, and the augmented glenoid component further comprises:
• a bearing insert member securable to said backing member,
• wherein said backing member is formed of one of a metal, a ceramic, a composite, and a biological material,
• wherein said bearing insert member is formed of one of a plastic, a ceramic, and a composite,
• wherein said backing member includes a plurality of holes each of which is configured to allow passage of a securing member for securing said backing member to the glenoid surface of the scapula,
• wherein said plurality of holes extend outwardly from said buttress member.

An augmented glenoid component for securement to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, the augmented glenoid component comprising:

• a body having a medial surface and a humerus surface;
• said medial surface configured to contact the glenoid surface of the scapula;
• said humerus surface configured to be contacted by the head portion of the humerus;
• an interruption extending from said medial surface and defining a first interruption surface positioned relative to said medial surface at an angle θ in which 45°<θ<135°, and a second interruption surface positioned relative to a line parallel to said medial surface at an angle Φ in which 0°<Φ<90°;
• and
• anchoring,
• Wherein said anchoring extends from said medial surface, and
• wherein said anchoring extends from said medial surface and said interruption.

An augmented glenoid component for securement to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, the augmented glenoid component comprising:

• a body having a medial surface and a humerus surface;
• said medial surface configured to contact the glenoid surface of the scapula;
• an interruption extending from said medial surface and defining a first interruption surface positioned relative to said medial surface at an angle θ in which 45°<θ<135°, and a second interruption surface positioned relative to a line parallel to said medial surface at an angle Φ in which 0°<Φ<90°;
• and
• anchoring,
• wherein said body comprises a backing member having said medial surface, said humerus body surface, and said interruption defined therein;
• and the augmented glenoid component further comprises:
• a bearing insert member securable to said backing member, and
• wherein (i) said backing member is formed of one of a metal, a ceramic, a composite, and a biological material;
• and (ii) said bearing insert member is formed of one of a plastic, a ceramic, and a composite.

A method of securing an augmented glenoid component to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, said augmented glenoid component having (i) a body having (a) a first body surface configured to contact the glenoid surface of the scapula, and (b) a second body surface configured to be contacted by the head portion of the humerus, and (ii) a buttress extending from said first body surface, the method comprising the steps of:

• forming a buttress-shaped recess in a glenoid surface of a scapula;
• and
• securing said augmented glenoid component to the glenoid surface of the scapula such that (i) said first body surface is positioned in contact with the glenoid surface of the scapula, and (ii) said buttress is positioned in said step-shaped recess,
• wherein said forming step includes the step of removing said buttress-shaped recess in the glenoid surface of the scapula with a bone cutter.

An augmented glenoid component for securement to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, the augmented glenoid component comprising:

• a body having a medial surface and a humerus surface;
• said medial surface configured to contact the glenoid surface of the scapula;
• said humerus surface configured to be contacted by the head portion of the humerus;
• an interruption extending from said medial surface and defining a first interruption surface positioned relative to said medial surface at an angle θ in which 45°<θ<135°, and a second interruption surface positioned relative to a line parallel to said medial surface at an angle Φ in which 0°<Φ<90°;
• and
• anchoring,
• wherein said anchoring extends from said medial surface, and
• wherein said anchoring extends entirely from said interruption.

An augmented glenoid component for securement to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, the augmented glenoid component comprising:

• a body having a medial surface and a humerus surface;
• said medial surface configured to contact the glenoid surface of the scapula;
• said humerus surface configured to be contacted by the head portion of the humerus;
• an interruption extending from said medial surface and defining a first interruption surface positioned relative to said medial surface at an angle θ in which 45°<θ<135°, and a second interruption surface positioned relative to a line parallel to said medial surface at an angle Φ in which 0°<Φ<90°;
• and
• anchoring,
• wherein said body comprises a backing member having said medial surface, said humerus body surface, and said interruption defined therein;
• and the augmented glenoid component further comprises:
• a bearing insert member securable to said backing member,
• wherein said backing member includes a plurality of holes each of which is configured to allow passage of a securing member for securing said backing member to the glenoid surface of the scapula, and
• wherein said plurality of holes extend outwardly from said interruption.

An augmented glenoid component for securement to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, the augmented glenoid component comprising:

• a body having a medial surface and a humerus surface;
• said medial surface configured to contact the glenoid surface of the scapula;
• said humerus surface configured to be contacted by the head portion of the humerus;
• an interruption extending from said medial surface and defining a first interruption surface positioned relative to said medial surface at an angle θ in which 45°<θ<135°, and a second interruption surface positioned relative to a line parallel to said medial surface at an angle Φ in which 0°<Φ<90°;
• and
• anchoring,
• wherein said body comprises a backing member having said medial surface, said humerus body surface, and said interruption defined therein;
• and the augmented glenoid component further comprises:
• a bearing insert member securable to said backing member,
• wherein said backing member includes a plurality of holes each of which is configured to allow passage of a securing member for securing said backing member to the glenoid surface of the scapula, and
• wherein said plurality of holes extend outwardly from and are distributed in said medial surface and said interruption.

A method of securing an augmented glenoid component to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, said augmented glenoid component having (i) a body having (a) a first body surface configured to contact the glenoid surface of the scapula, and (b) a second body surface configured to be contacted by the head portion of the humerus, and (ii) a buttress extending from said first body surface, the method comprising the steps of:

• forming a buttress-shaped recess in a glenoid surface of a scapula;
• and
• securing said augmented glenoid component to the glenoid surface of the scapula such that (i) said first body surface is positioned in contact with the glenoid surface of the scapula, and (ii) said buttress is positioned in said step-shaped recess,
• wherein said augmented glenoid component further has an anchor;
• and
• wherein said securing step includes the steps of:
• (i) forming an anchor hole in the glenoid surface of the scapula, and (ii) advancing said anchor into said anchor hole.