Custom Triflange Acetabular Components for Large Acetabular Defects: Minimum 10-Year Follow-up

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Reconstructive Surgery

Background:

• Acetabular revision surgery is challenging due to compromised bony support.
• Existing methods for acetabular defects have variable results and limited long-term data.

Purpose of the Study:

• To evaluate the long-term clinical and radiographic outcomes of custom triflange acetabular revision surgery.
• To assess the efficacy of custom triflange components in managing large acetabular defects.

Main Methods:

• Retrospective review of 37 patients undergoing custom triflange acetabular revision.
• Minimum 10-year clinical and radiographic follow-up for 35 patients.
• Assessment of component survival, complications, and functional scores (Harris hip score).

Main Results:

• 91% (32/35) of custom triflange components remained unrevised and functional at minimum 10-year follow-up.
• Low complication rates: no dislocations, fractures, or nerve injuries. Two components (6%) were removed for infection.
• Significant improvement in average Harris hip score from 28 preoperatively to 90 postoperatively.

Conclusions:

• Custom triflange components yield reliably good to excellent results in acetabular revision surgery for large defects.
• The custom triflange demonstrates durable performance and addresses significant bony support compromise.
• This approach offers a successful solution for complex acetabular reconstruction with favorable long-term outcomes.