Pinnacle polyethylene liner dissociation: a report of 3 cases

Ryland Kagan, Mike B. Anderson, Christopher Peters, Christopher Pelt, Jeremy Gililland

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


We describe 3 cases of DePuy Pinnacle polyethylene dissociations, their presentations, and treatment. A 34-year-old female with arthritis secondary to dysplasia, a 51-year-old male with avascular necrosis of the femoral head, and a 57-year-old female with osteoarthritis were treated with total hip arthroplasty. Acute nontraumatic polyethylene liner dissociations occurred at 31, 42, and 2 months postoperatively. They were treated with component retention and modular femoral head and liner revision. The 51-year-old male subsequently developed a prosthetic joint infection requiring explant of his components. Although dissociation of polyethylene liners from the DePuy Pinnacle acetabular components is an uncommon complication, this problem may increase in prevalence with longer term follow-up, and vigilance is recommended.

Original languageEnglish (US)
Pages (from-to)441-446
Number of pages6
JournalArthroplasty Today
Issue number4
StatePublished - Dec 2018
Externally publishedYes


  • DePuy
  • Modular acetabular components
  • Pinnacle
  • Polyethylene liner dissociation

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine


Dive into the research topics of 'Pinnacle polyethylene liner dissociation: a report of 3 cases'. Together they form a unique fingerprint.

Cite this