Femoral remodeling after porous-coated total hip arthroplasty with and without hydroxyapatite-tricalcium phosphate coating - A prospective randomizedtrial

We prospectively assessed femoral bone remodeling using dual-energy x-ray a bsorptiometry for 2 years after total hip arthroplasty. Thirty-nine hills w ere randomized to receive a titanium proximally porous-coated femoral compo nent with or without hydroxyapatite-tricalcium phosphate Coating. Although both stems resulted in alterations in the periprosthetic bone mineral densi ty, the hydroxyapatite-tricalcium phosphate Coated stems had significantly less femoral bone loss than the uncoated stems at 2-year follow-up. This re duced femoral bone loss may provide short-term and long-term advantages ove r noncoated stems.