The Effects of Metal on Metal Articulations on Periprostatic Osteolysis

A 64-year-old male underwent an uncomplicated right total hypartoplasty eight years ago. He now reports the insidious onset of right groin pain that has been present for ten months. You suspect he has a local soft tissue reaction caused by the main articulation that is mainly lymphocyte driven. Assuming physiological range of motion and adequate positioning, which of the following articulations does this patient most likely have? The correct answer to this question is three, metal on metal.