The cup belongs KHA® total hip arthroplasty system KAREY®. This system has been designed by an eminent group of experts in surgery COT, finding the cup KHA® within category impacted. The KHA® cup has a peripheral groove system on its half-central region that allows the cup to provide a thickness on whose purpose is to provide both optimum clamping effect when implanted. Turn the cup KHA® has a dual system for fixing and antirotational: - Fixing: besides the cup KHA® impaction allows the introduction of titanium screws (Ti6Al4V) low profile. - Anti-Rotation: The cup also has 3 screws above pivots pyramidal shape arranged at 120 ° to control rotation. The KHA® is a cementless acetabular prosthesis.