Surface stress: a factor influencing ultra high molecular weight polyethylene durability in mobile-bearing knee design
Morra, E.A.; Heim, C.S.; Greenwald, A.S.
Orthopedics 30(5 Suppl): 35-38
2007
ISSN/ISBN: 0147-7447 PMID: 17549865 Document Number: 614327
The continuing global interest in the use of total and unicompartmental mobile-bearing knee designs is manifest by an appreciation of their clinical performance. Like their fixed plateau counterparts, mobile-bearing knees are influenced by patient and surgical variables as well as design, material, and manufacturing choices. This article is a focused description of tibiofemoral surface stress distributions, as a predictor of in vivo material durability for three contemporary designs at positions encountered during daily activity.