Femoral prosthesis
US4021865A · kind A · utility
19Cited by
4References
9Claims
0Family size
Inventor
Key dates
| Filing date | Aug 14, 1975 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Aug 14, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/0052
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
When a femoral prosthesis, mounted in the femur, by cement, has been in use for some years, the upper part thereof can become unsupported and fracture of the stem near its mid-point can occur. To minimize this possibility, a flange is provided on at least one side of the stem of the prosthesis to ensure better load transfer to the cement and thus the bone. To prevent shear forces causing such separation at the concave surface of the stem of the prosthesis, this can be provided with serrations to discourage separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.