LAUSR

The taper junction comprises a male trunnion and female bore at specific taper angles, which join together in an interference cold weld fit.Studies have suggested that an impaction force of 4,000 N provides sufficient interference fit on modern taper designs.Factors that may correlate with corrosion are mixed-alloy components, insufficient taper assembly force, a wet taper when assembling, lower flexural rigidity, and previous taper damage. Inconclusive factors are head length, head size, trunnion neck length, lateral offset, taper angle and design, contact area, and percent of taper contact.A ceramic femoral head may reduce taper corrosion.Researchers are investigating newer technologies and coatings to decrease taper corrosion.