Research Article
Analysis of Lumbar Sagittal Curvature in Spinal Decompression and Fusion for Lumbar Spinal Stenosis Patients under Roussouly Classification
Figure 3
A 60-year-old male with diagnosed with lumbar spinal stenosis and had back pain for 4 years, aggravating pain in both lower limbs for 6 months. (a) Preoperative X-ray showed , , Roussouly type I, with the apex of lordosis at L5 upper edge, , , , , . (b) Preoperative lumbar CT and MRI showed L3/4, L4/5 segment disc herniation, facet joint hyperplasia and cohesion, and dural compression. (c) Postoperative X-ray showed that , , Roussouly type III, the lumbar lordosis vertex was at the L4 midpoint, , , , , and . SS, GL, and GK increased; SVA and PT decreased; PI unchanged. Lordosis vertex moved up to the L4 midpoint, classification from Roussouly types I to III (standard).
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