title: Patient-related risk factors for early revision of total hip replacements. A population register-based case-control study of 674 revised hips.
abstract: In this population register-based, matched case-control study, we assessed patient-related factors and early risk of revision after total hip replacement (THR). Information was obtained via a mall survey among patients reported to the Norwegian Arthroplasty Register during the period 1987-1993. The study included 674 revised hips, as cases, and 1,343 hips with a primary operation only, as controls. Completed questionnaires were received from 81% of the 2,017 individual cases and controls. We identified a set of patient-related factors associated with poor THR prognosis. Increasing weight was a risk factor among male patients older than 67 years who were more than 1.77 m tall (p = 0.01). Smoking had no overall effect, but former heavy smokers had an increased risk of 2.8 compared to never-smokers. Alcohol intake was associated with an increased risk of dislocation. Revision due to infection was commoner among patients taking anti-diabetic drugs (OR = 14) than among patients taking no medication. An increased overall revision risk was found among patients using systemic steroids (OR = 2.8) or local pulmonary steroids (OR = 6.0). The risk also increased in male patients performing regular exercise before the primary operation (OR = 2.6), and in female patients of working-age doing heavy work (OR = 1.9).
authors.affiliation: Department of Public Health and Primary Health Care, University of Bergen, Norway.
authors.forename: B
authors.initials: B
authors.lastname: Espehaug
authors.forename: L I
authors.initials: LI
authors.lastname: Havelin
authors.forename: L B
authors.initials: LB
authors.lastname: Engesaeter
authors.forename: N
authors.initials: N
authors.lastname: Langeland
authors.forename: S E
authors.initials: SE
authors.lastname: Vollset
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology / Q000517:prevention & control / Q000601:surgery*; D012042:Registries; D012086:Reoperation; D012189:Retrospective Studies; D012307:Risk Factors; D011795:Surveys and Questionnaires