Is the Stability of “Cancellous Metal” Shells Sufficient for Use without Screws in the Revision Acetabulum?

High porosity “cancellous” metal coatings have been introduced by several manufacturers to increase the fixation and biologic incorporation of acetabular cups. These materials have potential in expanding the indications for “mega-cups” in revision THR without the use of dome screws. This study was performed to determine the strength of initial fixation provided by a “cancellous” coated cup vs conventional alternatives in the deficient revision acetabulum.