title: Effect of a centralizing device on cement mantle deficiencies and initial prosthetic alignment in total hip arthroplasty.
abstract: Sixty consecutive patients undergoing a primary hybrid total hip arthroplasty were randomized to receive a femoral component either with or without a distal centralizing device. The group with a centralizer had significantly fewer patients with cement mantle deficiencies (excessively thin areas of cement) than the group without a centralizer (P < .001). Furthermore, the centralizer group was, on average, in a neutral alignment, whereas the group without a centralizer was in a varus alignment (P < .001). It was concluded that the distal centralizing device significantly decreases the incidence of cement mantle deficiences and reproducibly aids in achieving a more neutral prosthetic alignment.
authors.affiliation: Department of Orthopaedic Surgery, University of Pittsburgh, Pennsylvania, USA.
authors.forename: R A
authors.initials: RA
authors.lastname: Berger
authors.forename: M J
authors.initials: MJ
authors.lastname: Seel
authors.forename: K
authors.initials: K
authors.lastname: Wood
authors.forename: R
authors.initials: R
authors.lastname: Evans
authors.forename: J
authors.initials: J
authors.lastname: D'Antonio
authors.forename: H E
authors.initials: HE
authors.lastname: Rubash
mesh_terms: D001843:Bone Cements; D016009:Chi-Square Distribution; D005269:Femur / Q000000981:diagnostic imaging; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000295:instrumentation*; D006801:Humans; D008768:Methylmethacrylates; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D015203:Reproducibility of Results
chemical_list: D001843:Bone Cements; D008768:Methylmethacrylates