Custom Triflange Cups: 20-Year Experience

Abstract Introduction The custom triflange acetabular component is utilized during revision THA to address severe acetabular bone loss. Midterm results are promising, with low rates of loosening and triflange revision reported. However, reoperation and overall complication rates remain high. We aim to investigate our institution’s custom triflange experience over 20 years by evaluating implant survivorship, reoperations, complications, and clinical outcomes. Methods Prospectively collected data was reviewed for 50 patients undergoing revision THA with the use of a triflanged component from January 2000 – December 2018. 94% among these cases had a known outcome or minimum two years follow-up. Outcomes related to the triflange component were recorded, including revisions, reoperations, surgical complications, medical complications, Harris hip scores (HHS), and patient satisfaction. Phone interviews were conducted with patients whose recent follow-up exceeded 2 years. Radiographic review was performed to define implants as either stable or unstable. Results The average HHS improved 24 points (49 to 73; p Conclusion Custom triflange components provide a reliable solution for managing complex acetabular defects in revision THA. Patients should be counseled on magnitude of surgery and the high incidence of complications, specifically infection and dislocation.