Harbour-UCLA Medical Center physician Dr. Kwong introduced a novel technique for dual mobility liners in problematic cases of hip instability that now increasingly calls the care of prosthetic hip instability into question. This presentation at the XXIII Annual Meeting of the Mexican Society for the Surgery of the Hip took place in Acapulco.

The Challenge of Hip Instability in Revision THA

One of the more complex situations in revision total hip arthroplasty (THA) is recurrent hip dislocation, especially when the femoral component is stable and well-positioned as a monoblock. Modular components further complicate revisions when the original manufacturer is unknown or replacement heads are unavailable, limiting the surgeon’s options.

Dr. Kwong highlighted these challenges, noting the difficulties in treating patients with recurrent dislocation when the femoral component is secure.

An Innovative Technique Using Dual Mobility Liners

To address these issues, Dr. Kwong introduced a novel in vivo application of dual mobility liners. His technique utilizes the dual mobility liner assembly clamp to secure a liner of the appropriate diameter onto an existing femoral head within the hip joint. This method provides surgeons with the flexibility to stabilize the hip without removing a well-fixed component, which may not be feasible.

Dr. Kwong explained, “This technique eliminates the need to remove a stable monoblock femoral prosthesis or a modular component lacking replacement heads, while still benefiting from the stability of a modern dual mobility liner system.”

Dual Mobility Liners and Revision THA

His approach has demonstrated excellent clinical results in stabilizing previously unstable cases following revision THA. Moreover, this technique can help patients avoid more invasive procedures, reduce surgery time, and improve recovery periods and outcomes. As dual mobility liners gain traction in the field, Dr. Kwong’s innovative application enhances orthopedic surgeons’ ability to provide increased stability for revision THA patients.

About Dr. Louis M. Kwong

Dr. Louis Kwong is a professor and chairman of the department of orthopedic surgery at Harbor-UCLA Medical Center. He continues to drive advances in orthopedic surgery, with a significant emphasis on hip reconstruction and prosthetic innovations that improve patient outcomes.