DOS 2018

DOS Kongressen 2018 · 251 1-year follow-up results following revision of periprosthetic femoral fracture using ARCOS revision total hip arthroplasty Casper Ferløv Winther, Claus Varnum, Per Kjærsgaard-Andersen, Henrik Husted, Anders Troelsen, Kirill Gromov Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Copenhagen, Denmark; Section for Hip and Knee Replacement, Department of Orthopaedic Surgery, Vejle Hospital, Vejle, Denmark Background: New implants are continuously introduced in joint arthroplasty in attempt to improve outcome and reduce complications. Monitoring of such implants is required to identify early failures and complications. Purpose / Aim of Study: To describe early outcome following revision of peri- prosthetic femoral fractures (PFF) using ARCOS revision total hip arthroplasty (rTHA) with a minimum 1-year follow-up. Materials and Methods: 41 patients revised using ARCOS THA between 01.01.2014 and 01.03.2017 due to a PFF were identified at two centers. Patient- and surgery- related data was recorded including time from primary surgery until fracture, Dorr type, and measured canal flair index. Surgical param- eters included intraoperative complications, fracture reduction, canal fill, and stem length under fracture. Radiological examination at a minimum 12 months follow-up included subsidence and fracture dislocation. All revisions were iden- tified. Findings / Results: 3 patients died before 1-year follow-up. One patient was lost to follow-up. Mean age was 73.9 years and 73% were female. Mean time from primary THA was 1.8 years. Mean follow-up time for patients who did not have a second revision was 2.8 years. There were no intraoperative complica- tions. A total of 6 patients had a second revision due to infection (2), peripros- thetic fracture (2), dislocation (1), and loose cables (1). There were 63% hips with Dorr type A, 21 % with type B, and 15 % with type C. The mean stem length under fracture was 90 mm, mean canal fill in AP projection was 98% and 92% in lateral projection. All fractures were reduced to anatomic or near ana- tomic reduction. Mean subsidence was 3.3 mm. 22 % subsided > 5 mm. Conclusions: ARCOS rTHA used for treatment for PFF had an acceptable early complication rate and subsidence comparable to other modular revision sys- tems. 192.