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Implant survivorship analysis after minimally invasive sacroiliac joint fusion using the iFuse Implant System®

Authors Cher DJ, Reckling WC, Capobianco RA

Received 21 August 2015

Accepted for publication 23 October 2015

Published 23 November 2015 Volume 2015:8 Pages 485—492

DOI https://doi.org/10.2147/MDER.S94885

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Di Lang

Peer reviewer comments 3

Editor who approved publication: Dr Scott Fraser

Daniel J Cher,1 W Carlton Reckling,2 Robyn A Capobianco1

1Department of Clinical Affairs, SI-BONE, Inc., 2Department of Medical Affairs, SI-BONE, Inc., San Jose, CA, USA

Introduction: Surgical revision rate is a key outcome with all permanent implants. The iFuse Implant System® is a permanent implant used to perform minimally invasive sacroiliac joint fusion. The purpose of this study is to determine the surgical revision rate after sacroiliac joint fusion surgery with this system.
Methods: Using two internal sources of information, revision surgeries were identified and linked to index surgeries. The likelihood of revision surgery was calculated using the Kaplan–Meier life table approach. Predictors of revision were explored.
Results: Four-year survivorship free from implant revision was 96.46%. Revision rate did not differ by sex and was lower for age >65. In all, 24% of revisions occurred within the first 30 days after surgery; 63.5% occurred within year 1. Implant survivorship has improved annually since the device was introduced in 2009.
Conclusion: The survivorship rate with this implant is high and improving; the rate is somewhat higher than total hip replacement but lower than that of lumbar spine procedures.

Keywords: safety, sacroiliac joint fusion, iFuse Implant System, revision

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