The effect of femoral head size on dislocation following total hip replacement

Active, not recruiting

• Conditions: dislocation following total hip replacement; Musculoskeletal - Osteoarthritis; Musculoskeletal - Other muscular and skeletal disorders; Surgery - Surgical techniques

• Registration Number: ACTRN12609000678291
• Lead Sponsor: Prof Donald Howie

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2009-08-10
• Last Update Posted: 13 January 2020

Recruitment & Eligibility

• Status: Active, not recruiting
• Sex: All
• Target Recruitment: 650

Inclusion Criteria

undergoing primary total hip replacement involving a metal on polyethylene articulation, through a posterior surgical approach, for osteoarthritis, rheumatoid or other inflammatory arthritis, or previous fracture/dislocation/surgery to the hip; or
undergoing revision total hip replacement (involving a metal on polyethylene articulation) of a hemiarthroplasty or revision of a total hip replacement

Exclusion Criteria

age <60 years (revisions: <50),
neuromuscular disease,
abnormal abductor mechanism,
abnormal acetabulum (primaries only),
revision for instability or infection (revisions only)

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Dislocation of the total hip prosthesis. <br>Patients complete a Hip Instability Questionnaire, which asks whether they have experienced a number of symptoms of instability or a dislocation. A Hospital Visit Questionnaire is also completed, which documents every admission or attendance to the Emergency Room of a hospital. <br>A radiograph of the dislocated hip is required for confirmation of dislocation.[one year following total hip replacement]

Secondary Outcome Measures

Name	Time	Method
Polyethylene wear, which is measured from standard radiographs, using PolyWare, a computer-based analysis program for measuring wear.[two years following total hip replacement];Acetabular cup migration, which is measured from standard radiographs, using Einbild Roentgen Analyse (EBRA), a computer-based analysis program for measuring acetabular cup migration.[two years following total hip replacement]