Claims
- 1. 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 penetrating said glenoid surface of said scapula so as to secure said body portion to said glenoid surface of said scapula, 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 glenoid surface of said scapula so as to prevent movement of said body portion relative to said glenoid surface of said scapula.
- 2. The glenoid component of claim 1, wherein:
said anchor peg includes a shaft portion which extends from said first surface of said body portion, and said fin is secured to said shaft portion and extends substantially perpendicularly therefrom.
- 3. The glenoid component of claim 2, wherein said fin is integrally formed with said shaft portion of said anchor peg.
- 4. The glenoid component of claim 2, wherein:
said anchor peg is received into an anchor hole defined in said glenoid surface of said scapula when said body portion is secured to said glenoid surface of said scapula, said fin of said anchor peg has a first diameter, said anchor hole has a second diameter, and said first diameter is greater than said second diameter.
- 5. The glenoid component of claim 4, wherein:
said shaft portion of said anchor peg has a third diameter, and both said first diameter and said second diameter are greater than said third diameter.
- 6. The glenoid component of claim 4, wherein said fin is configured to deform when said anchor peg is received into said anchor hole defined in said glenoid surface of said scapula.
- 7. The glenoid component of claim 1, further comprising a second stabilizing peg, wherein said first stabilizing peg and said second stabilizing peg are spaced apart from said anchor peg in substantially opposite directions.
- 8. The glenoid component of claim 1, further comprising a second stabilizing peg and a third stabilizing peg, wherein:
said first stabilizing peg and said anchor peg are aligned with respect with one another along a first imaginary line, said second stabilizing peg and said third stabilizing peg are aligned with respect with one another along a second imaginary line, and said first imaginary line is substantially perpendicular to said second imaginary line.
- 9. The glenoid component of claim 1, wherein each of said body portion, said anchor peg, said fin, and said stabilizing peg are integrally formed with one another.
- 10. 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.
- 11. The method of claim 10, wherein:
said anchor peg includes a shaft portion which extends from said first surface of said body portion, each of said number of fins is secured to said shaft portion and extends substantially perpendicularly therefrom, and said anchor peg advancing step includes the step of advancing said shaft portion of said anchor peg into said anchor hole said as to position said number of fins in said anchor hole.
- 12. The method of claim 10, wherein:
each of said number of fins of said anchor peg has a first diameter, said drilling step includes the step of drilling said anchor hole in said glenoid surface of said scapula such that said anchor hole has a second diameter, and said first diameter is greater than said second diameter.
- 13. The method of claim 10, wherein said anchor peg advancing step includes the step of deforming said number of fins as said anchor peg is advanced into said anchor hole.
- 14. The method of claim 10, wherein (i) said glenoid component further has a second stabilizing peg, (ii) said first stabilizing peg and said second stabilizing peg are spaced apart from said anchor peg in substantially opposite directions, further comprising the steps of:
drilling a second stabilizing hole in said glenoid surface of said scapula; and advancing said second stabilizing peg into said second stabilizing hole, wherein each of said anchor peg advancing step, said first stabilizing peg advancing step, and said second 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.
- 15. The method of claim 10, wherein (i) said glenoid component further has a second stabilizing peg and a third stabilizing peg, (ii) said first stabilizing peg and said anchor peg are aligned with respect with one another along a first imaginary line, (iii) said second stabilizing peg and said third stabilizing peg are aligned with respect with one another along a second imaginary line, and (iv) said first imaginary line is substantially perpendicular to said second imaginary line, further comprising the steps of:
drilling a second stabilizing hole and a third stabilizing hole in said glenoid surface of said scapula; advancing said second stabilizing peg into said second stabilizing hole; and advancing said third stabilizing peg into said third stabilizing hole, wherein each of said anchor peg advancing step, said first stabilizing peg advancing step, said second stabilizing peg advancing step, and said third 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.
- 16. The method of claim 10, wherein said anchor hole is devoid of bone cement during said anchor peg advancing step.
- 17. 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.
- 18. The glenoid component of claim 17, wherein:
said anchor peg is received into an anchor hole defined in said glenoid surface of said scapula when said body portion is secured to said glenoid surface of said scapula, each of said number of fins of said anchor peg has a first diameter, said anchor hole has a second diameter, and said first diameter is greater than said second diameter.
- 19. The glenoid component of claim 18, wherein:
said shaft portion of said anchor peg has a third diameter, and both said first diameter and said second diameter are greater than said third diameter.
- 20. The glenoid component of claim 18, wherein said number of fins are configured to deform when said anchor peg is received into said anchor hole defined in said glenoid surface of said scapula.
- 21. 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.
- 22. The glenoid component of claim 21, wherein:
said anchor peg includes a shaft portion which extends from said first surface of said body portion, and said fin is secured to said shaft portion and extends substantially perpendicularly therefrom.
- 23. The glenoid component of claim 22, wherein said fin is integrally formed with said shaft portion of said anchor peg.
- 24. The glenoid component of claim 22, wherein:
said fin of said anchor peg has a first diameter, said anchor hole has a second diameter, and said first diameter is greater than said second diameter.
- 25. 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.
- 26. The bearing component of claim 25, wherein:
said anchor peg includes a shaft portion which extends from said first surface of said body portion, and said fin is secured to said shaft portion and extends substantially perpendicularly therefrom.
- 27. The bearing component of claim 26, wherein said fin is integrally formed with said shaft portion of said anchor peg.
- 28. The bearing component of claim 26, wherein:
said anchor peg is received into an anchor hole defined in said natural bearing surface of said first bone when said body portion is secured to said natural bearing surface of said first bone, said fin of said anchor peg has a first diameter, said anchor hole has a second diameter, and said first diameter is greater than said second diameter.
- 29. The bearing component of claim 28, wherein:
said shaft portion of said anchor peg has a third diameter, and both said first diameter and said second diameter are greater than said third diameter.
Parent Case Info
[0001] This non-provisional U.S. patent application claims the benefit of U.S. provisional patent application Ser. No. 60/190,391, filed on Mar. 17, 2000.
Provisional Applications (1)
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Number |
Date |
Country |
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60190391 |
Mar 2000 |
US |