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. 2017 Jun 27;17:446. doi: 10.1186/s12913-017-2398-6

Fig. 2.

Fig. 2

Surgical procedures performed in the studies included in the review. “360 procedure”: Posterolateral fusion plus internal fixation with the variable screw placement device plus interbody fusion; ALIF: Anterior Lumbar Interbody Fusion; MIS: Minimal Invasive Surgery; OS: Open Surgery; PLF: Posterolateral Fusion; PLIF: Posterior Lumbar Interbody Fusion; TLIF: Transforaminal Lumbar Interbody Fusion