Knee joint prosthesis
US5326358A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1992 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Aug 27, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/389
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A knee joint prosthesis includes two guide faces for receiving the condyles of a distal femur. The prosthesis includes a tibial plateau of polyethylene which is embedded in a metal tibial shank with a plate. The underside of the plate is planar and bears against a resection area of the tibia shaped as a planar endface. On the inside of the plate, in the region of the guide faces, pockets are formed. The pockets follow the curvature of the guide faces in sagittal planes and exhibit at their lowest point a maximum wall thickness of 1.5 mm, while the minimum wall thickness of the tibial plateau resting in the pockets amounts to 6.5 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.