Table 1 MRI measurements of lumbar developmental spinal stenosis
From: Radiographic indices for lumbar developmental spinal stenosis
Measurement | Median, mm (±SD) | Intraobserver reliability | 95% CI | Interobserver reliability | 95% CI | |
|---|---|---|---|---|---|---|
AP bony spinal canal diameter | Patient | Control | Â | Â | Â | Â |
L1 | 18.2 (1.4) | 19.3 (2.3) | 0.94* | 0.75–0.99 | 0.91* | 0.70–0.97 |
L2 | 17.3 (1.5) | 19.1 (2.3) | 0.97* | 0.87–0.99 | 0.96* | 0.87–0.98 |
L3 | 16.5 (2.0) | 18.8 (2.9) | 0.98* | 0.94–1.00 | 0.97* | 0.88–0.99 |
L4 | 14.8 (1.9) | 19.1 (2.1) | 0.97* | 0.89–0.99 | 0.94* | 0.82–0.99 |
L5 | 14.2 (1.3) | 19.4 (3.8) | 0.98* | 0.91–0.99 | 0.99* | 0.87–0.99 |
S1 | 14.1 (1.6) | 17.4 (2.1) | 0.96* | 0.82–0.99 | 0.89* | 0.78–0.99 |