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 .
Osteoarthritis Index delivered by mobile phone (m-WOMAC) is valid, reliable, and responsive.
OBJECTIVES To evaluate the validity , reliability , responsiveness , and mode preference of electronic data capture ( EDC ) using the Western Ontario and McMaster ( WOMAC ) numerical rating scale ( NRS ) 3.1 Osteoarthritis ( OA ) Index on Motorola V3 mobile phones . STUDY DESIGN AND SETTING Patients with OA undergoing hip or knee joint replacement were assessed preoperatively and 3 - 4 months postoperatively , completing the WOMAC Index in paper ( p-WOMAC ) and electronic ( m-WOMAC ) format in r and om order . RESULTS Data were successfully and securely transmitted from patients in Australia to a server in the United States . Pearson correlations between the summated total index scores ( TISs ) for the p-WOMAC and m-WOMAC pre- and postsurgery were 0.98 and 0.99 ( P<0.0001 ) . There were no clinical ly important or statistically significant between- method differences in the adjusted total summated scores , pre- and postsurgery ( adjusted mean differences=4.44 , P=0.474 and 1.73 , P=0.781 , respectively ) . Internal consistency estimates of m-WOMAC reliability were 0.87 - 0.98 . The m-WOMAC detected clinical ly important , statistically significant ( P<0.0001 ) improvements in pain , stiffness , function , and TIS . No statistically significant differences in mode preference were detected . CONCLUSIONS There was close agreement and no significant differences between m-WOMAC and p-WOMAC scores . This study confirms the validity , reliability , and responsiveness of the Exco InTouch-engineered , Java-based m-WOMAC Index application . EDC with the m-WOMAC Index provides unique opportunities for using quantitative measurement in clinical research and practice
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 .