
Recon | TKA Polyethylene Wear & Manufacturing
The Orthobullets Podcast
00:00
The Basics of Polyethylene Manufacturing
Fabrication methods include rambar extrusion and machining. Calcium-steerate additive leads to fusion defects in polyethylene. Direct compression molding slash net shape will have lower wear rates, specifically 50% wear rate of machine products. The perfect storm scenario for catastrophic wear is a metal-backed tibial base plate with a thin polyethylene,. A flat bearing design in the coronal plane with a low contact area with a high load can cause fatigue cracking.
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