title: Prediction of Charnley femoral stem aseptic loosening by early post-operative radiological features.
abstract: We describe the association between immediate post-operative radiological appearances and early aseptic failure of total hip replacement. Sixty-three hips were entered into the aseptic failure group and 138 into the control group. Alignment of the femoral stem was not associated with failure (p=0.283). Thickness of the cement mantle was associated with failure in Gruen zones 6 (p=0.040) and 7 (p=0.003). A significant association for the presence of radiolucent lines was found for Gruen zones 3 (p=0.0001) and 5 (p=0.0001). Grade of cementation was associated with failure for Barrack grades C (p=0.001) and D (p=0.001). This study has demonstrated that easily applied radiological criteria can be used to identify 'hip arthroplasties at risk' from the immediate post-operative radiograph.
authors.affiliation: Centre for Hip Surgery, Wrightington Hospital, Hall Lane, Appley Bridge, Wigan, WN6 9EP, UK. hammymalik@hotmail.com
authors.forename: M H A
authors.initials: MH
authors.lastname: Malik
authors.forename: N
authors.initials: N
authors.lastname: Fisher
authors.forename: J
authors.initials: J
authors.lastname: Gray
authors.forename: B M
authors.initials: BM
authors.lastname: Wroblewski
authors.forename: P R
authors.initials: PR
authors.lastname: Kay
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D016022:Case-Control Studies; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D011237:Predictive Value of Tests; D011475:Prosthesis Failure; D011859:Radiography; D012189:Retrospective Studies