Table of Contents
ISRN Minimally Invasive Surgery
Volume 2014, Article ID 571014, 6 pages
Clinical Study

Implant-Bone Interface of Sacroiliac Joint Fusion Using iFuse Implant System

1Division of Trauma Surgery, Department of Surgery, University Hospital Zurich, 8006 Zurich, Switzerland
2Division of Nuclear Medicine, Department of Medical Radiology, University Hospital Zurich, 8006 Zurich, Switzerland
3Department of Medical Radiology, Diagnostic and Interventional Radiology, University Hospital Zurich, 8006 Zurich, Switzerland

Received 24 December 2013; Accepted 27 February 2014; Published 25 March 2014

Academic Editors: N. Druzijanic, Y. Izci, W. Kolb, and P. Spennato

Copyright © 2014 M. J. Scheyerer et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Introduction. Treatment of patients with SI joint pain is mostly limited to conservative care. However, in those with chronic pain and consequently prolonged mobilisation, internal fixation of the SI joint is often indicated. The aim of the present study was to assess stability and bone ingrowth of minimally invasive SI joint arthrodesis using a series of triangular, porous plasma coated implants (iFuse Implant System) using SPECT/CT. Material. We report ten cases of SI joint arthrodesis with a novel MIS SI joint fusion system. SPECT/CT was performed in all cases after a mean time of 5.8 months to evaluate bony ingrowth and stability within the SI joint. Results. In eight cases, no or only low tracer uptake could be visualized as an indicator of stability and bone ingrowth. Two patients have increased tracer uptake due to a second trauma-related ipsilateral sacral fracture and a low-grade infection. Conclusion. We could visualize satisfying osseous integration as well as stability within the SI joint after arthrodesis using iFuse Implant System. Therefore iFuse Implant System seems to be an effective treatment option in selected patients.