title: The effect of a lateral flare feature on implant stability.
abstract: We reviewed the X-rays of 109 patients with 115 primary total hip replacements utilizing a lateral flare cementless stem to assess axial migration and stability. The average follow-up was 48.6 (24-104) months. The average subsidence at 2 years was 0.32 mm, remaining at a level below 1 mm for the duration of the follow-up. Even though there were ten reoperations involving either the change of a polyethylene liner and the acetabular component, or both, none of the patients required a femoral stem revision. It was concluded that the proximal geometry of the stem provides significant initial stability, which seems to be preserved throughout a long follow-up period.
authors.affiliation: Department of Orthopedic Surgery, 530 First Ave., Suite 5B, New York University Medical Center, Hospital for Joint Diseases, New York, NY 10016, USA. alex.leali@med.nyu.edu
authors.forename: Alex
authors.initials: A
authors.lastname: Leali
authors.forename: Joseph
authors.initials: J
authors.lastname: Fetto
authors.forename: Harvey
authors.initials: H
authors.lastname: Insler
authors.forename: David
authors.initials: D
authors.lastname: Elfenbein
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D001843:Bone Cements; D005260:Female; D005269:Femur / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D012189:Retrospective Studies; D013997:Time Factors
chemical_list: D001843:Bone Cements