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. 2016 Jul 13;9(3):309–315. doi: 10.1007/s12178-016-9355-6

Fig. 1.

Fig. 1

Preoperative (left) and postoperative (right) axial T2-weighted MRI through the L4/5 disc space showing a placement of an interbody cage through a mini-open left-sided retroperitoneal transpsoas approach. Noted is the widening of the central canal and neuroforamen