The dual mobility poly liner: A worthwhile articulation choice?

Dual mobility liners represent an alternative to large heads to prevent dislocation. We used dual mobility in primary total hip arthroplasty in 2 patients (3 hips) with cerebral palsy; there were no dislocations or revisions at a mean follow-up of 2.3 years. In 22 patients (22 hips) revised to dual mobility, the most prevalent indication was adverse reaction to metal debris. There were 3 re-revisions at 1.8 years: 1 recurrent dislocation precipitated by traumatic injury, 1 deep infection and 1 unexplained pain. For abductor deficiency, a constrained liner may be indicated.