Ast, Michael P Two Year Clinical Outcomes of Total Hip Arthroplasty Are Not Dependent on Femoral Head Composition. [electronic resource] - HSS journal : the musculoskeletal journal of Hospital for Special Surgery Jul 2015 - 130-5 p. digital Publication Type: Journal Article ISSN: 1556-3316 Standard No.: 10.1007/s11420-015-9433-0 doi