Method and apparatus for providing resorbable fixation of press-fit implants
First Claim
1. A press-fit prosthesis for replacing a portion of a bone comprising:
- a tibial tray devoid of apertures passing there through having;
a medial portion;
a lateral portion;
a center portion between the medial portion and the lateral portion;
a first side; and
a second side opposite the first side, the second side operable to engage the bone; and
a pair of first resorbable fixation members coupled to the second side at the medial portion and a pair of second resorbable fixation members coupled to the second side at the lateral portion, the resorbable fixation members do not extend through to the first side, the resorbable fixation members are coupled offset from the center portion of the second side, the resorbable fixation members substantially resist movement of the prosthesis relative to the bone;
wherein the resorbable fixation members resorb at a rate that enables bone in-growth to fixedly couple the prosthesis to the bone;
wherein the center portion is devoid of a fixation member; and
wherein the second side includes a roughened portion confined to an area immediately surrounding each of the resorbable fixation members, each of the roughened portions are separate and spaced apart from one another.
4 Assignments
0 Petitions
Accused Products
Abstract
A press-fit prosthesis for replacing a portion of a bone. The prosthesis can comprise a first side and a second side opposite the first side. The second side can be operable to engage the bone. The prosthesis can include at least one resorbable fixation member coupled to the second side such that the at least one resorbable fixation member does not extend through to the first side. The at least one resorbable fixation member can be coupled offset from a center of the second side. The at least one resorbable fixation member can substantially resist movement of the prosthesis relative to the bone. The at least one resorbable fixation member can resorb at a rate that enables bone in-growth to fixedly couple the prothesis to the bone.
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Citations
16 Claims
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1. A press-fit prosthesis for replacing a portion of a bone comprising:
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a tibial tray devoid of apertures passing there through having; a medial portion; a lateral portion; a center portion between the medial portion and the lateral portion; a first side; and a second side opposite the first side, the second side operable to engage the bone; and a pair of first resorbable fixation members coupled to the second side at the medial portion and a pair of second resorbable fixation members coupled to the second side at the lateral portion, the resorbable fixation members do not extend through to the first side, the resorbable fixation members are coupled offset from the center portion of the second side, the resorbable fixation members substantially resist movement of the prosthesis relative to the bone; wherein the resorbable fixation members resorb at a rate that enables bone in-growth to fixedly couple the prosthesis to the bone; wherein the center portion is devoid of a fixation member; and wherein the second side includes a roughened portion confined to an area immediately surrounding each of the resorbable fixation members, each of the roughened portions are separate and spaced apart from one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification