title: Midterm experience with the cementless Zweymueller system. Results of a minimum five-year follow-up study.
abstract: Eighty-five patients with 96 cementless press-fit hip implants were followed over a period of at least 5 years postoperatively. The average Harris score was 87.5 points. One socket had to be exchanged 4 years postoperatively because of aseptic loosening. Additionally, 5 sockets developed radiolucent lines, one of them totally around the socket, but without signs of subsidence progression. In no case was a change of the stem necessary; one stem subsided 4 mm within the first postoperative year but was stable at the last follow-up investigation. One patient was personally dissatisfied with the outcome of the operation. No implant-specific complications such as breakage of the implant, breakage or crack of the stem, or blasting of the pelvic girdle by socket-screwing were observed.
authors.affiliation: Department of Orthopedic surgery, University of Vienna Medical School, Austria.
authors.forename: R
authors.initials: R
authors.lastname: Eyb
authors.forename: H P
authors.initials: HP
authors.lastname: Kutschera
authors.forename: T
authors.initials: T
authors.lastname: Schartelmueller
authors.forename: C
authors.initials: C
authors.lastname: Toma
authors.forename: K
authors.initials: K
authors.lastname: Zweymueller
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000497:Alloys; D005260:Female; D005500:Follow-Up Studies; D005684:Gait; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000502:physiology; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular; D014025:Titanium
chemical_list: D000497:Alloys; D014025:Titanium