Apparatus and method for securing a cementless glenoid component to a glenoid surface of a scapula

A method of securing a glenoid component to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus, said glenoid component having (i) a body portion which has a first surface configured to contact said glenoid surface of said scapula and a second surface configured to receive said head portion of said humerus, (ii) an anchor peg extending from said first surface of said body portion, said anchor peg having a number of fins secured thereto, and (iii) a first stabilizing peg extending from said first surface of said body portion, comprising the steps of:

• drilling an anchor hole and a first stabilizing hole in said glenoid surface of said scapula;
• advancing said anchor peg into said anchor hole so as to position said number of fins in said anchor hole;
• and
• advancing said first stabilizing peg into said first stabilizing hole, wherein said anchor peg advancing step and said first stabilizing peg advancing step are performed contemporaneously such that said first surface of said body portion is advanced into contact with said glenoid surface of said scapula.

A 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, comprising:

• a body portion having (i) a first surface configured to contact said glenoid surface of said scapula, and (ii) a second surface configured to receive said head portion of said humerus;
• an anchor peg having a shaft portion which extends outwardly from said first surface of said body portion for penetrating said glenoid surface of said scapula so as to secure said body portion to said glenoid surface of said scapula, wherein said shaft portion of said anchor peg has a number of fins defined therein;
• and
• a first stabilizing peg extending outwardly from said first surface of said body portion for penetrating said glenoid surface of said scapula so as to prevent movement of said body portion relative to said glenoid surface of said scapula, wherein each of said body portion, said anchor peg, said number of fins, and said stabilizing peg are integrally molded with one another.

A 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, comprising:

• a body portion having (i) a first surface configured to contact said glenoid surface of said scapula, and (ii) a second surface configured to receive said head portion of said humerus;
• an anchor peg extending from said first surface of said body portion for insertion into an anchor hole formed in said glenoid surface of said scapula so as to secure said body portion to said glenoid surface of said scapula, wherein (i) said anchor peg has an outwardly extending fin secured thereto, and (ii) said fin is configured to deform upon insertion of said anchor peg into said anchor hole such that a removal force required to remove said anchor peg from said anchor hole is greater in magnitude than an insertion force required to insert said anchor peg into said anchor hole;
• and
• a first stabilizing peg extending from said first surface of said body portion for insertion into a stabilizing hole formed in said glenoid surface of said scapula so as to prevent movement of said body portion relative to said glenoid surface of said scapula.

A bearing component for securement to a natural bearing surface of a first bone so as to provide a bearing surface for a contact portion of a second bone, comprising:

• a body portion having (i) a first surface configured to contact said natural bearing surface of said first bone, and (ii) a second surface configured to receive said contact portion of said second bone,
• an anchor peg extending from said first surface of said body portion for penetrating said natural bearing surface of said first bone so as to secure said body portion to said natural surface of said first bone, wherein said anchor peg has a first end portion and a second end portion with (i) said first end portion of said anchor peg being secured to said first surface of said body portion, and (ii) said second end portion of said anchor peg having an outwardly extending fin secured thereto;
• and
• a first stabilizing peg extending from said first surface of said body portion for penetrating said natural bearing surface of said first bone so as to prevent movement of said body portion relative to said natural bearing surface of said first bone.