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 .
Questionnaire on the perceptions of patients about total hip replacement.
We developed a 12-item question naire for completion by patients having total hip replacement ( THR ) . A prospect i ve study of 220 patients was undertaken before operation and at follow-up six months later . Each completed the new question naire as well as the SF36 , and some the  Arthritis Impact Measurement Scales ( AIMS ) . An orthopaedic surgeon assessed the Charnley hip score . The single score derived from the question naire had a high internal consistency . Reproducibility was examined by test-retest reliability and was found to be satisfactory . The validity of the question naire was established by obtaining significant correlation in the expected direction with the Charnley scores and relevant scales of the SF36 and the AIMS . Sensitivity to change was assessed by analysing the differences between the preoperative scores and those at the follow-up . The st and ardised effect size for the new question naire compared favourably with that for the SF36 and the AIMS . The new question naire provides a measure of outcome for THR which is short , practical , reliable , valid and sensitive to clinical ly important changes
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 .