Polyethylene liner failure in second-generation Harris-Galante acetabular components

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Medical Device Engineering

Background:

• Polyethylene liner failure is a significant complication in cementless acetabular components.
• Modular hip implants, like the Harris-Galante cup, are susceptible to wear and failure.
• Understanding failure modes is crucial for improving long-term implant survival.

Purpose of the Study:

• To evaluate the long-term outcomes and failure rates of the second-generation Harris-Galante acetabular component.
• To identify the primary reasons for revision surgery in patients receiving this implant.
• To investigate the influence of patient-specific factors on implant performance.

Main Methods:

• Retrospective review of 128 primary total hip arthroplasties using the Harris-Galante II cup.
• Analysis of patient records for a mean follow-up period of 8.0 years.
• Documentation of revision surgeries and causes of failure, specifically polyethylene liner failure.

Main Results:

• A significant revision rate of 20.2% (26 out of 128 cups) was observed.
• Polyethylene liner failure accounted for the majority of revisions, occurring in 17.3% (22 out of 128 hips).
• Cultural practices involving squatting and leg crossing were identified as potential risk factors for impingement and wear.

Conclusions:

• Polyethylene liner failure remains the predominant cause for revision of the Harris-Galante II acetabular component.
• Patient-specific activities, such as squatting and leg crossing, may increase the risk of eccentric wear and failure.
• Further research into implant design and patient selection is warranted to mitigate liner failure in total hip arthroplasty.