title: Response to letter to the editor by William H. Harris.
authors.affiliation: Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, Ma; The Rothman Institute, Philadelphia, Pennsylvania; University of Iowa Hospitals and Clinics, Iowa City, Iowa.
authors.forename: Michael A
authors.initials: MA
authors.lastname: Mont
authors.affiliation: Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, Ma; The Rothman Institute, Philadelphia, Pennsylvania; University of Iowa Hospitals and Clinics, Iowa City, Iowa.
authors.forename: William J
authors.initials: WJ
authors.lastname: Hozack
authors.affiliation: Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, Ma; The Rothman Institute, Philadelphia, Pennsylvania; University of Iowa Hospitals and Clinics, Iowa City, Iowa.
authors.forename: John C
authors.initials: JC
authors.lastname: Callaghan
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000639:trends*; D004059:Diffusion of Innovation; D006801:Humans