Crack-growth properties of various elastomers with potential application in small joint prostheses
✍ Scribed by Hutchinson, D. T. ;Savory, K. M. ;Bachus, K. N.
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 97 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0021-9304
No coin nor oath required. For personal study only.
✦ Synopsis
Silastic small joint spacers for the metacarpo-flex, and a thermoplastic elastomer, Santoprene, with phalangeal joint fail catastrophically at a reported rate rang-those of Silastic. The materials were evaluated after sterilizaing from 2 to 26%. Although the exact cause of this problem tion by either ethylene oxide or gamma irradiation in an is not known, it is speculated that failure is due to the propa-ASTM standard flexing machine under conditions of high gation of flaws generated in the material surface. In addition humidity and body temperature both before and after artifito wear secondary to bony impingement, these flaws can be cially aging. In each case, the materials investigated preintroduced through manufacturing, surgical handling, and sented significantly lower crack-growth rates than Silastic in vivo frictional wear. In an effort to identify an elastomeric (p Ͻ 0.001).