Patients experienced significant post-THR improvements in Harris Hip scores , but this did not differ between impact types .
Recipients of cross-linked vs. conventional polyethylene cup liners experienced reduced femoral head penetration and revision .
There was no impact of femoral stem fixation and cup shell design on implant survival rates .
Evidence on mortality and complications ( aseptic loosening , femoral fracture ) was inconclusive .
BACKGROUND Evolvements in the design , fixation methods , size , and bearing surface of implants for  total hip replacement ( THR ) have led to a variety of options for healthcare professionals to consider .
The need to determine the most optimal combinations of THR implant is warranted .
This systematic review evaluated the clinical effectiveness of different types of THR used for the treatment of end stage arthritis of the hip .
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.
The aim of this prospect i ve r and omised 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 clinical ly 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
Patients experienced significant post-THR improvements in Harris Hip scores , but this did not differ between impact types .
Recipients of cross-linked vs. conventional polyethylene cup liners experienced reduced femoral head penetration and revision .
There was no impact of femoral stem fixation and cup shell design on implant survival rates .
Evidence on mortality and complications ( aseptic loosening , femoral fracture ) was inconclusive .
BACKGROUND Evolvements in the design , fixation methods , size , and bearing surface of implants for  total hip replacement ( THR ) have led to a variety of options for healthcare professionals to consider .
The need to determine the most optimal combinations of THR implant is warranted .
This systematic review evaluated the clinical effectiveness of different types of THR used for the treatment of end stage arthritis of the hip .