title: [The Balgrist hip cup--a 4-to-10-year survival analysis of cement-free hip cups].
abstract: The results of 715 cement-free acetabular sockets used in primary total hip arthroplasties are shown according to a survivorship analysis after Kaplan-Meier. The survival probability of the examined cement-free polyethylene sockets after 5 years lies between 88.1% and 93.6% (Endler screw socket of polyethylene: 93.6%; Balgrist socket of polyethylene: 88.1%; Balgrist socket of polyethylene with titanium coating: 90.6%). The survival probability of the Endler socket after ten years is only 44.2%. No statistically significant difference in the survival curves of the polyethylene socket models could be found (p logrank 0.797). The Balgrist sockets with the outer split ring made of titanium show a far better survival rate (98.8% after 4 years) than those made of polyethylene. This result justified the further development of a Modular Revision socket made of titanium so that the original idea could be extended to revision interventions where large acetabular defects have to be coped with.
authors.affiliation: Orthopädische Universitätsklinik Balgrist, Zürich.
authors.forename: R
authors.initials: R
authors.lastname: Hauser
authors.forename: H A
authors.initials: HA
authors.lastname: Jacob
authors.forename: S
authors.initials: S
authors.lastname: Kern
authors.forename: A
authors.initials: A
authors.lastname: Schreiber
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis / Q000706:statistics & numerical data; D006801:Humans; D015993:Life Tables; D008297:Male; D008875:Middle Aged; D011095:Polyethylenes; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation; D014025:Titanium
chemical_list: D011095:Polyethylenes; D014025:Titanium
vernacular_title: Die Balgrist Hüftpfanne--Eine 4- bis 10-Jahres Uberlebenszeitanalyse von zementfreien Hüftpfannen.