title: Concept and material properties of a cementless hip prosthesis system with Al2O3 ceramic ball heads and wrought Ti-6Al-4V stems.
abstract: A cementless total hip system of modular design is presented. The design of the stem provides for a firm seating on the cortical bone over a large area. Therefore primarily stable fixation is accomplished. The stem in seven different sizes is made of hot forged Ti-6Al-4V Protasul-64 WF alloy of high corrosion fatigue strength. The Biolox ceramic ball with three different neck lengths is connected to the high strength stem by means of a special selflocking conical spigot with a structured surface. The ceramic ball is combined with a polyethylene screw socket in four different sizes, designed by Endler and anchored in the acetabulum without acrylic cement. This hip prosthesis system has proved itself in clinical application since 1979.
mesh_terms: D000497:Alloys; D000535:Aluminum; D000537:Aluminum Oxide; D001672:Biocompatible Materials / Q000627:therapeutic use*; D002516:Ceramics; D006622:Hip Prosthesis; D006801:Humans; D011095:Polyethylenes; D011474:Prosthesis Design; D014025:Titanium
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D011095:Polyethylenes; C031462:titanium alloy (TiAl6V4); D000535:Aluminum; D014025:Titanium; D000537:Aluminum Oxide