Fig. 4

This is a 77-year-old female patient who complained of radiating pain over bilateral buttocks anterior thigh and lower limbs. Image studies showed L4 spondylolisthesis, L3–4 and L5-S1 spinal stenosis. Neural decompression and L3-S1 interbody fusion were performed with L3–5 OLIF and L5-S1 TLIF. ΔSDA:1.5° at L3–4 level, 7.8° at L4–5 level