The use of a triflange salvage system for catastrophic pelvic osteolysis after failed total hip arthroplasty.

Siegel, Matthew A; Patetta, Michael J; Chen, Jason Y; Barragan Echenique, Diego M; Gonzalez, Mark H · J Orthop · 2021

retrospective_cohort · Level III

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Abstract

The custom triflange acetabular implant (CTAI) has been described to address catastrophic pelvic osteolysis, but long-term outcome data is scarce. Revision-free survivorship after revision THA with a CTAI was retrospectively reviewed in seven patients. Mean and median follow-up time were 7.39 (1.61-16.8) years and 7.50 years, respectively. Revision-free survivorship was 85.7% (6/7). One patient underwent revision for recurrent dislocations. All patients were able to ambulate at recent follow-up- 2/7 without assistance. The CTAI is a viable option for patients with catastrophic pelvic osteolysis. There is a high complication rate, but the incidence of revision is low.

Anatomy