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RTI's Simmetry Reduces SI Joint Range of Motion -

Study results demonstrated that RTI Surgical's Simmetry® Sacroiliac Joint Fusion system provided effective joint fixation, markedly reducing range of motion in the SI joint. RTI acquired the system with its purchase of Zyga in early 2018. The human cadaveric biomechanical study compared two minimally-invasive techniques for placing primary and secondary threaded implants, examining effectiveness in stabilizing the SI joint. Results showed a 65% to 71% reduction in joint motion using multiple configurations of the implants, with benefits maintained after repeated loading. These benefits were noted as greater than those seen in previous studies using triangular SI joint implants. (RTI Surgical, Inc., 3/28/18)