Custom Triflange Acetabular Components For Catastrophic Bone Loss: Minimum 5-Year Results

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Reconstructive Surgery

Background:

• Custom acetabular components are increasingly used for total hip arthroplasty.
• They are essential for reconstructing catastrophic bone loss and acetabular failure.

Purpose of the Study:

• To determine the survivorship of custom triflange acetabular components.
• To evaluate their effectiveness in reconstructions with catastrophic bone loss.

Main Methods:

• A cohort of 66 hips (64 patients) with Paprosky 3B or 3C acetabular defects were analyzed.
• Custom triflange components were used for reconstruction.
• Survivorship was assessed using survival analysis with a minimum 5-year follow-up.

Main Results:

• A cohort of 47 hips (46 patients) had minimum 5-year follow-up (mean 8 years, range 5-16).
• Overall survivorship was 94.1% at a mean of 16 years.
• Harris hip scores improved significantly from 41 to 64 points postoperatively.

Conclusions:

• Custom acetabular triflange components are highly effective for managing catastrophic bone loss.
• These custom implants demonstrate good long-term survival, averaging 16 years.
• They represent a valuable option in hip reconstruction surgery.