Table 2 Correlations between radiological and MRI findings, and NRS

LL (°)

21 (12, 31)

−0.05

0.04

−0.03

PI (°)

51 (44, 60)

0.09

0.10

<  0.01

PT (°)

25 (18, 32)

0.12*

0.04

−0.06

SS (°)

27 (22, 32)

−0.02

0.04

<  0.01

PI-LL (°)

30 (21, 41)

0.12*

0.02

0.02

Presence of slippage n (%)

126 (43.0)

−0.05

% Slip (%)

0 (0, 14.8)

−0.06

0.05

−0.04

Severity of stenosis (maximum stenotic level), (Grade A:B:C:D)

44:81:165:3

0.04

0.14*

0.19*

Total number of stenoses (more than grade B), n segments

2 (1, 3)

−0.02

0.05

0.11

Total number of stenoses (more than grade C), n segments

1 (0, 1)

0.01

0.07

0.13*

Total number of focal defects, n endplates (from L1 to S1, per patient)

1 (0, 3)

0.06

−0.02

<  0.01

Total number of corner defects, n endplates (from L1 to S1, per patient)

0 (0, 2)

0.06

0.02

0.04

Total number of erosive defects, n endplates (from L1 to S1, per patient)

1 (0, 3)

0.22*

0.11

0.16*

Total number of endplate defects, n endplates (from L1 to S1, per patient)

5 (3, 7)

0.21*

0.05

0.15*

Total number of Modic type 1, n segments (from L1/2 to L5/S, per patient)

0 (0, 0)

0.14*

0.07

0.19*

Total number of Modic type 2, n segments (from L1/2 to L5/S, per patient)

1 (0, 2)

0.05

0.03

−0.01

Total number of Modic type 3, n segments (from L1/2 to L5/S, per patient)

0 (0, 0)

0.21*

0.10

0.12*

Total number of Modic endplate changes, n segments (from L1/2 to L5/S, per patient)

1 (0, 2)

0.19*

0.10

0.12*

Summary score of disc degeneration grading

19 (17, 21)

0.14*

0.04

0.11

Total number of disc degeneration (more than grade IV), n segments

4 (2, 5)

0.09

0.04

0.09

Summary score of disc bulging grading

7 (5, 8)

0.07

0.11

0.19*

Summary score of disc height grading

7 (4, 10)

0.12*

−0.03

0.07

Total number of facet joint osteoarthritis (more than grade 3), n segments

3 (2, 4)

<  0.01

0.05

0.01