Table 5.
Relationship between the disc height in different grade of intervertebral disc degeneration using Pfirrmann score and clinical outcomes.
| Disc Height in Grade I (N = 591) (mm) |
Disc Height in Grade II (N = 573) (mm) |
Disc Height in Grade III (N = 333) (mm) |
Disc Height in Grade IV (N = 136) (mm) |
Disc Height in Grade V (N = 27) (mm) |
P value_Post Hoc (p < 0.05) | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L1-L2 | L2-L3 | L3-L4 | L4-L5 | L5-S1 | L1-L2 | L2-L3 | L3-L4 | L4-L5 | L5-S1 | L1-L2 | L2-L3 | L3-L4 | L4-L5 | L5-S1 | L1-L2 | L2-L3 | L3-L4 | L4-L5 | L5-S1 | L1-L2 | L2-L3 | L3-L4 | L4-L5 | L5-S1 | ||
| VAS LBP | 3.82 (1.73) | 3.89 (1.83) | 4.11 (1.86) | 4.01 (1.75) | 4.04 (1.92) | 4.25 (1.66) | 4.38 (1.76) | 4.57 (1.79) | 4.69 (1.93) | 4.65 (1.91) | 4.3 (1.82) | 4.29 (1.78) | 4.20 (1.75) | 4.42 (1.80) | 4.49 (1.69) | – | 4.49 (1.93) | 4.65 (1.91) | 4.53 (1.72) | 4.52 (1.80) | – | – | – | 4.67 (1.32)- | 4.67 (1.53) | Pfirrmann IV and V compared to Pfirrmann I |
| r = 0.038 (P = 0.729) | r = −0.041 (P = 0.711) | r = −0.065 (P = 0.584) | r = −0.311 (P = 0.025) | r = −0.537 (P = 0.000) | ||||||||||||||||||||||
| ODI | 21.16 (10.11) | 21.06 (10.98) | 22.88 (11.69) | 22.09 (10.75) | 22.37 (11.54) | 24.34 (11.01) | 24.56 (10.34) | 26.27 (9.98) | 26.30 (11.65) | 27.21 (11.14) | 24.34 (10.44) | 25.28 (10.23) | 24.63 (10.27) | 26.42 (10.03) | 24.31 (9.63) | – | 25.76 (10.35) | 26.58 (11.01) | 23.96 (10.73) | 26.93 (10.41) | – | – | – | 28.44 (7.73)- | 26.76 (10.74) | Pfirrmann V compared to Pfirrmann I |
| r = 0.041 (P = 0.716) | r = −0.056 (P = 0.664) | r = −0.61 (P = 0.593) | r = −0.245 (P = 0.086) | R = −0.512 (P = 0.000) | ||||||||||||||||||||||
N: number of levels; VAS: Visual Analogue Scale; LBP: low back pain; ODI: Oswestry Disability Index; mm: millimetre; All values are mean (Standard Deviation).