Comparison of a Novel Posterior Integrated Transfixation Sacroiliac Joint Fusion Approach to the Posterolateral and Lateral Approaches: A Cadaveric Biomechanical and Computational Analysis of the Fixation, Invasiveness, and Fusion Area.

The lateral triangular rod reported statistically significant reductions in flexion-extension ( P =0.045), and a trend towards significance in axial rotation ( P =0.058) and lateral bending ( P =0.083). 52 The reductions in the flexion-extension ROM of both the posterior cage ( P =0.027) and the lateral triangular rod ( P =0.049) groups were statistically larger than that of the posterolateral threaded implant and equivalent in both axial rotation ( P >0.158), and lateral bending ( P >0.085).

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