title: Cemented polyethylene and cementless porous-coated acetabular components have similar outcomes at a mean of seven years after total hip replacement: a prospective randomised study.
abstract: The aim of this prospective randomised study   was to compare the clinical and radiological results of a cemented   all-polyethylene Ultima acetabular component with those of a cementless   porous-coated acetabular component (PFC) following total hip replacement   (THR). A total of 287 patients received either a polyethylene acetabular   component (group A) or a cobalt-chromium porous-coated component   (group B) with an identical cemented femoral component and 28 mm   cobalt-chromium head, thus making it the largest study of its type.   Patients were evaluated radiologically and clinically using the   Harris hip score (HHS). Group A comprised 183 patients (73 male,   110 female) with a mean age of    71.3 years (55 to 89). Group B comprised 104 patients (48 male,   56 female) with a mean age of 69.8 years (56 to 89). A total of   16 patients (13 in Group A, three in Group B) did not have post-operative   data for analysis. The mean follow-up in group A was 7.52 years   (0.4 to 15.0) and in Group B 7.87 years (0.5 to 14.0). At final follow-up the mean HHS was similar between groups A   and B (74.5 (25 to 100) and 78.0 (37 to 100), respectively; p =   0.068). The total number of revisions for any cause was 28, 17 of   which were in group A and 11 in group B. The ten-year survivorship   was 86.8% (95% confidence interval (CI) 78.4 to 92.1) and 89.2%   (95% CI 78.3 to 94.8) for groups A and B, respectively (log-rank   p-value = 0.938). A total of 20 cemented and two cementless acetabular   components had evidence of acetabular radiolucencies or acetabular   component migration at last follow-up (p = 0.001). These results indicate that patients with a cemented all-polyethylene   and cementless porous-coated polyethylene lined acetabular component   have similar long-term clinical outcomes.
authors.affiliation: Northampton General Hospital, Cliftonville, Northampton NN1 5BD, UK. docdarshan2002@yahoo.com
authors.forename: D S
authors.initials: DS
authors.lastname: Angadi
authors.forename: S
authors.initials: S
authors.lastname: Brown
authors.forename: E J P
authors.initials: EJ
authors.lastname: Crawfurd
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D000368:Aged; D000369:Aged, 80 and over; D001172:Arthritis, Rheumatoid / Q000601:surgery*; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods* / Q000401:mortality; D001843:Bone Cements / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D020959:Polyethylene / Q000627:therapeutic use*; D011446:Prospective Studies; D011474:Prosthesis Design; D011859:Radiography; D012086:Reoperation; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements; D020959:Polyethylene