Reliability of the new modified Moro’s classification and oblique corridor grading to assess the feasibility of oblique lumbar interbody fusion

July 16, 2020

Introduction:

The modified Moro’s classification (MMC) of psoas morphology and oblique corridor (OC) grading were recently proposed. Their reliability needs to be tested.

Methods:

T2 weighted lumbar disc level axial-cut MRI images of patients with degenerative spondylosis were distributed to five spine surgeons. The inter and intra-rater reliability of MMC and OC grading were calculated based on their ratings.

Results:

Based on kappa statistics, we inferred that both MMC and OC grading are reliable measures.

Conclusion:

Both MMC and OC grading, in combination, can be used to predict the feasibility of oblique lumbar interbody fusion and aid in patient selection.

Keywords:

Lumbosacral region; Psoas muscle; Spinal fusion; Spine; Spondylosis.