• Brian P Gladnick, Keith A Fehring, Susan M Odum, Michael J Christie, David K DeBoer, and Thomas K Fehring.
• OrthoVirginia, Adult Hip and Knee Reconstruction, Arlington, Virginia.
• J Arthroplasty. 2018 Feb 1; 33 (2): 500-504.

BackgroundCustom triflange acetabular components are being increasingly used for the reconstruction of Paprosky type IIIB acetabular defects. However, midterm survivorship data are lacking.MethodsWe queried the prospective registries at 2 high-volume revision centers for patients who had undergone revision total hip arthroplasty using a custom triflange component between 2000 and 2011. We identified 73 patients with minimum 5-year follow-up. These patients' records were reviewed to determine incidence of revision or reoperation, clinical performance, and radiographic stability. The mean follow-up was 7.5 years (range 5-12 years).ResultsFifteen of 73 triflange components (20.5%) were indicated for revision during the follow-up period, including 6 for instability (8%) and 8 for infection (11%). Twelve of 73 patients (16%) underwent reoperation for reasons other than failure of the triflange component. The median hip disability and osteoarthritis outcome score for joint replacement score at midterm follow-up was 85 (interquartile range 73-100). Only 1 of 73 implants was determined to be radiographically loose at midterm follow-up.ConclusionCustom triflange reconstruction for severe acetabular deficiency is a viable option; however, complications are common and significant challenges remain for those that fail.Copyright © 2017 Elsevier Inc. All rights reserved.

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