title: Comparison of cemented ceramic and metal-polyethylene coupling hip prostheses in ankylosing spondylitis.
abstract: Two groups of patients suffering from ankylosing spondylitis were treated by total hip arthroplasty. Twenty-one patients (37 hips) were treated with cemented metal-polyethylene prosthesis, whereas 18 patients (36 hips) had cemented ceramic coupling implants. The two groups had similar preoperative clinical data. The average follow-up period was seven to eight years for both. Each patient was graded clinically (pain, function, range of motion, deformities) and roentgenographically (radiolucent lines, etc.). Patients with metal-polyethylene implants showed important modifications of the bone around the implant. Clinical and roentgenographic results were relatively good in patients with ceramic implants. The results underline the importance of the friction coupling of the implant.
authors.affiliation: Rizzoli Orthopaedic Institute, Bologna, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Gualtieri
authors.forename: I
authors.initials: I
authors.lastname: Gualtieri
authors.forename: M
authors.initials: M
authors.lastname: Hendriks
authors.forename: S
authors.initials: S
authors.lastname: Gagliardi
mesh_terms: D000328:Adult; D001843:Bone Cements / Q000627:therapeutic use*; D002516:Ceramics; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008875:Middle Aged; D011095:Polyethylenes; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000601:surgery*
chemical_list: D001843:Bone Cements; D011095:Polyethylenes