Cementation of a Dual Mobility Cup Into an Existing Well-Fixed Metal Shell: A Reliable Option to Manage Wear-Related...

Area of Science:

• Orthopedic Surgery
• Arthroplasty
• Biomaterials

Background:

• Revision total hip arthroplasty (THA) presents challenges, especially in high-risk patients.
• The double-socket technique offers a potential solution to reduce perioperative morbidity.
• Cementing a dual mobility cup into an existing metal shell for revision THA is sparsely reported.

Purpose of the Study:

• To evaluate the outcomes of the double-socket technique with a cemented dual mobility cup in revision THA for late instability.
• To assess the efficacy and safety of this technique in elderly and high-risk patient populations.

Main Methods:

• Retrospective review of 28 revision THAs using the double-socket technique with a cemented dual mobility cup.
• Patients underwent revision for wear-related recurrent dislocation.
• Average patient age was 82 years, with a high prevalence of American Society of Anesthesiologists (ASA) physical status classification II and III.

Main Results:

• Significant improvement in functional outcomes observed postoperatively (P < .01).
• Mean operative time was 107 minutes with mean intraoperative bleeding of 200 mL.
• No dislocations, construct dissociations, or aseptic loosening were reported at a mean follow-up of 3.5 years.

Conclusions:

• The double-socket technique with a cemented dual mobility cup is a straightforward, blood-sparing revision method.
• This technique effectively restores stability and provides a secure acetabular construct.
• It is particularly beneficial for frail patients with high surgical risk or advanced age.