Finite Element Analysis of Stress Distribution in Flat and Elevated-Rim Polyethylene Acetabular Liners.

Conclusions: Elevated-rim liners affect the stress distribution by increasing the area of contact. However, since elevated-rim liners exhibit high stress at the cup edge, they are likely to result in new problems including liner failure. These findings could aid surgeons in the selection of liners and determination of revision methods such as isolated liner exchange vs. acetabular cup revision for a well-fixed metal cup with a higher inclination angle in revision total hip arthroplasty.
PMID: 32904112 [PubMed - in process]

Source: Clinics in Orthopedic Surgery - September 11, 2020 Category: Orthopaedics Tags: Clin Orthop Surg Source Type: research