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Table 1 Retroperitoneal oblique corridor (ROC) according to lumbar levels (mm)

From: Neutral hip position for the oblique lumbar interbody fusion (OLIF) approach increases the retroperitoneal oblique corridor

  ROCS ROCHF ROCHN p value
L2/3 14.8 ± 1.3 13.0 ± 0.9 16.8 ± 1.4 0.021*
L3/4 14.3 ± 2.2 13.1 ± 1.3 16.2 ± 0.9 0.036*
L4/5 13.5 ± 1.3 12.8 ± 1.8 15.4 ± 1.0 0.019*
  1. * indicates p < 0.05, statistical significance
  2. ROCS retroperitoneal oblique corridor in supine
  3. ROCHF retroperitoneal oblique corridor in right lateral decubitus with hip flexion
  4. ROCHN retroperitoneal oblique corridor in right lateral decubitus with hip in neutral
  5. There were statistical differences between ROCHN compared to the ROCS, and ROCHF at all levels (p < 0.05) but no significant difference of ROC between all levels (p = 0.22).