Outcomes 7 to 10 years following total hip replacement

INTERVENTION: The current study is a 7 to 10 year follow‐up study of patients enrolled in the randomised controlled trial described in ACTRN12609000678291. Patients undergoing total hip replacement were randomised to receive either a large 36 mm articulation (intervention) or standard 28 mm articulation (control). CONDITION: Acetabular component migration Dislocation of total hip replacement Periprosthetic osteolysis Polyethylene wear Revision or re‐operation of total hip replacement PRIMARY OUTCOME: % of patients with osteolytic lesions exceeding 1 cubic centimetre, as measured by CT SECONDARY OUTCOME: Acetabular component migration, measured using EBRA (Ein Bild Roentgen Analyse), a computer program which measures migration using plain radiographs Incidence of dislocation. Dislocation is measured initially through responses to a Hip Instability Questionnaire and Hospital Visit Questionnaire. Dislocations must then be confirmed radiologically. Other complications, such as infection, pain and loosening, as reported by patient Polyethylene wear, measured using PolyWare, a computer program which measures wear using plain radiographs incidence of re‐operation or revision of index total hip replacement INCLUSION CRITERIA: Only patients involved in the RCT, ACTRN12609000678291, will be eligible for this study