Does the use of a larger femoral head in total hip replacement increase the amount of wear of the plastic liner or the amount of movement of the acetabular cup?

Not Applicable

Active, not recruiting

• Conditions: Polyethylene wear of the highly cross-linked polyethylene liner of the acetabular component of the total hip replacement prosthesis; Migration of the acetabular component of the total hip replacement prosthesis; Musculoskeletal - Osteoarthritis; Surgery - Other surgery

• Registration Number: ACTRN12613000860763
• Lead Sponsor: Prof Donald Howie

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2013-08-05
• Last Update Posted: 13 January 2020

Recruitment & Eligibility

• Status: Active, not recruiting
• Sex: All
• Target Recruitment: 56

Inclusion Criteria

1. undergoing primary total hip replacement through posterior approach
2. diagnosis of osteoarthritis
3. walking ability restricted only by hip pathology

Exclusion Criteria

1. previous infection
2. abnormal acetabulum
3. abnormal abductor mechanism
4. expected leg length inequality >5 cm
5. neuromuscular disease affecting hip

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Mean proximal linear polyethylene wear, as measured by radiostereometric analysis[Between 3 months and 2 years following total hip replacement]

Secondary Outcome Measures

Name	Time	Method
Mean proximal linear wear, as measured by radiostereometric analysis[Between 3 months and 3, 5, 7 and 10 years following total hip replacement];Percentage of patients exceeding 0.14 mm of proximal linear polyethylene wear, as measured by radiostereometric analysis[Between 3 months and 2 years following total hip replacement];Mean acetabular component migration, as measured by radiostereometric analysis[1, 2, 3, 5, 7 and 10 years following total hip replacement]