backside wear

Poly Design and Wear

Definition

 

Loss of material from solid surface due to mechanical action

 

Types of wear

 

TKR

- more complex movements compared with THR

- rolling, sliding and rotation

- delamination, pitting and fatigue failure of the poly surface

 

Types

- adhesive wear (most common in TKR)

- abrasive wear

- third body wear

- fatigue wear - delaminating