Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
A tibial prosthesis comprising a base having a medial end with a first arcuate outer perimeter, a lateral end with a second arcuate outer perimeter, said first arcuate outer perimeter having a first radius of curvature greater than a second radius of curvature associated with the second arcuate outer perimeter, a first notch between the medial end and the lateral end, the first notch being in front of an anterior-posterior centerline, and a second notch between the medial end and the lateral end, the second notch being behind the anterior-posterior centerline, said ends being substantially symetric with respect to said anterior-posterior centerline and said first and second notches being arranged in mirror-image relationship across said centerline; means for securing said base to a resected surface on a patient's tibia; and an insert having a medial condyle compartment and a lateral condyle compartment for articulating with femoral condyles, said insert being secured to an upper surface of said base.
Claim 2
Dependent Claim
158 words
A tibial prosthesis comprising a base having a medial end with a first arcuate outer perimeter, a lateral end with a second arcuate outer perimeter, said first arcuate outer perimeter having a first radius of curvature greater than a second radius of curvature associated with the second arcuate outer perimeter, a first notch between the medial end and the lateral end, the first notch being in front of an anterior-posterior centerline, and a second notch between the medial end and the lateral end, the second notch being behind the anterior-posterior centerline, said ends being substantially symetric with respect to said anterior-posterior centerline and said first and second notches being arranged in mirror-image relationship across said centerline; means for securing said base to a resected surface on a patient's tibia; and an insert having a medial condyle compartment and a lateral condyle compartment for articulating with femoral condyles, said insert being secured to an upper surface of said base.
Claim 3
Dependent Claim
30 words
A tibial prosthesis according to claim 1, wherein the first radius of curvature is on the order of one eighth of an inch larger than the second radius of curvature.
Claim 4
Dependent Claim
27 words
A tibial prosthesis according to claim 2, wherein the insert comprises: an anterior edge and a posterior edge, the anterior edge being thicker than the posterior edge.
Claim 5
Dependent Claim
23 words
A tibial prosthesis according to claim 1, wherein the insert further comprises: a tibial eminence connecting the medial compartment and the lateral compartment.
Claim 6
Dependent Claim
112 words
A tibial prosthesis according to claim 1, wherein: the medial condyle compartment comprises a first curved surface of articulation for a femoral medial condyle, the first surface of articulation comprising: an anterior lip; a posterior lip; and a central depression; said first surface of articulation having a first surface radius of curvature and wherein; the lateral condyle compartment comprises a second curved surface of articulation for a femoral lateral condyle, the second surface of articulation comprising: an anterior lip; a posterior lip; and a central depression; said second surface of articulation having a second surface radius of curvature, said second surface of curvature being larger than said first surface radius of curvature.
Claim 7
Dependent Claim
32 words
A tibial prosthesis according to claim 5, wherein the first perimeter radius of curvature is on the order of one eighth of an inch larger than the second perimeter radius of curvature.
Claim 8
Dependent Claim
27 words
A tibial prosthesis according to claim 6, wherein the insert comprises: an anterior edge and a posterior edge, the anterior edge being thicker than the posterior edge.