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E-Type - Early Wear of Polyethylene Liners Used in DMC

Study acronym: E-type
StatusRecruiting
PhasePhase 4
Started
View on ClinicalTrials.gov ↗

Record History

  1. Recruitment opened
    • Start date changed from estimate of Oct 2, 2026 to Oct 8, 2026
    • Site details revised
  2. Study First Submitted
  • Stopped: an ongoing trial was terminated, suspended or withdrawn.
  • Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
  • Minor: routine progress and housekeeping, such as sites added or enrollment closed.
This is a single-centre, randomized, double-blinded controlled non-inferiority trial that will be conducted at the Orthopaedic Department at Uppsala University Hospital, Uppsala. The aim of the study is to evaluate the performance of a dual mobility acetabular component with a Vitamin E-infused highly crosslinked polyethylene (VEPE) liner compared to a conventional polyethylene (PE) liner in adult patients with symptomatic osteoarthritis, osteonecrosis, or dysplasia of the hip requiring a hip replacement. The assessments will focus on early wear, cup migration, adverse events, and clinical outcomes. Measurements will be conducted using Computed Tomography Radiostereometric Analysis (CT-RSA) instead of traditional radiostereometric analysis. The study hypothesis is that the PE liner will be non-inferior to the VEPE liner in terms of early wear over a two-year period.
Trial Details
NCT Number NCT07863557
Lead Sponsor Uppsala University
Conditions
(from sponsor)		 Osteoarthritis, Osteonecrosis, Dysplasia; Hip
Related terms Hip Dislocation, Osteoarthritis, Osteonecrosis
Enrollment 40 participants
Start Date
Primary Completion (estimated)
Study Completion (estimated)
Updated on ClinicalTrials.gov