Knee prosthesis having guide surfaces for control of anterior-posterior displacement
US6264697A · kind A · utility
Inventor
Key dates
| Filing date | Oct 14, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Oct 14, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00011
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A condylar total knee replacement prosthesis is disclosed having interacting guide surfaces for control of anterior-posterior displacement. The prosthesis comprises a femoral component (1) having a pair of condylar surfaces (2,3), a tibial component having a tibial platform (4) and a bearing component interposed between the femoral and tibial components. A femoral guide surface (5) is located between the condyles and engages with a tibial guide surface (8) to cause the femoral component to displace posteriorly during flexing movements and displace anteriorly during extending movements. The femoral guide surface is offset posteriorly and downwardly from the center of major curvature of the femoral condyles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.