Fracture of Dual-Mobility Polyethylene Liner in a Primary Total Hip Arthroplasty: A New Complication to a Modern Design: A Case Report.

ABSTRACT: We present the first documented case of polyethylene liner fracture in a primary dual-mobility cup (DMC) total hip arthroplasty leading to intraprosthetic dislocation. A 50-year-old female with a history of hip dysplasia and leg length discrepancy underwent primary total hip arthroplasty with a DMC. She presented with an anterior intraprosthetic hip dislocation. Revision surgery revealed a fractured highly cross-linked polyethylene liner. The liner and fragments were removed and a new liner was implanted. This case underscores the potential mechanical limitations of highly cross-linked polyethylene in DMC configurations.

SUBMITTER: Bailey EP 

PROVIDER: S-EPMC12450735 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature