Guide for Characterization of Wear from Metal-on-Metal Implants
Standard guide for measuring volumetric wear and measurements of wear depth through use of coordinate measuring machine (CMM) on the femoral head and acetabular shell. A high-density point cloud is obtained of each worn articular insert and compared against an identical non-worn articular surface to calculate maximum wear depth and total volumetric wear. An iterative removal of the surface’s worn areas is employed to approximate the geometry of the non-worn articular insert.
