Posterior stabilized knee prosthesis

Details Posterior stabilized knee prosthesis Posterior stabilized knee prosthesis

2011-01-25

2011-01-25

Snow, Bruce E (Department: 3738)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

C623S020210

Reexamination Certificate

active

07875081

ABSTRACT:
A knee joint prosthesis includes a femoral component having an anterior side, a posterior side, a pair of laterally spaced condylar portions, and an intercondylar portion joining the condylar portions and including a recess. A cam surface is located adjacent the intercondylar recess on the anterior side of the femoral component and has a saddle shape that is defined by an at least substantially concave first radius of curvature and a convex third radius of curvature that is perpendicular to the concave first radius of curvature. The prosthesis also includes a tibial component including a platform having an upper surface that includes first and second laterally spaced concavities. Each concavity is adapted for receiving one condylar portion of the femoral component. The tibial component has a tibial post for reception in the intercondylar recess of the femoral component. The tibial post has a saddle shaped anterior cam surface that is complementary to the saddle shaped anterior cam surface of the femoral component and is defined by an at least substantially convex second radius of curvature and a concave fourth radius of curvature that is perpendicular to the convex second radius of curvature.

REFERENCES:
patent: 3840905 (1974-10-01), Deane
patent: 4209861 (1980-07-01), Walker et al.
patent: 4213209 (1980-07-01), Insall et al.
patent: 4298992 (1981-11-01), Burstein et al.
patent: 4888021 (1989-12-01), Forte et al.
patent: 5358527 (1994-10-01), Forte
patent: 5702458 (1997-12-01), Burstein et al.
patent: 7081137 (2006-07-01), Servidio
patent: 2003/0004577 (2003-01-01), Running
patent: 2004/0143338 (2004-07-01), Burkinshaw et al.
Hanson, George et al., In Vivo Anterior Tibial Post Contact after Posterior Stabilizing Total Knee Arthroplasty, Journal of Orthopaedic Research, Mar. 2007.
Li, Guoan et al., Anterior tibial post impingement in a posterior stabilized total knee arthroplasty, Jornal of Orthopaedic Research, vol. 23 (2005) pp. 536-541.
Puloski, S.K.T., et al. Tibial Post Wear in Posterior—Stabilized Total Knee Arthorplasty: An Unrecognized Source of Polyethylene Debris, The Journal of Bone & Joint Surgery, vol. 83-A, No. 3, pp. 390-397, Mar. 2001.
Huang, Chang-Hung, et al., Stress Analysis of the Anterior Tibial Post in Posterior Stabilized Knee Prostheses, Journal of Orthopaedic Research, Apr. 2007.
Callaghan, John J. et al., Tibial Post Impingement in Posterior-Stabilized Total Knee Arthroplasty, Clinical Orthopaedics and Related Research, No. 404 pp. 83-88 (2002).

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