Table 3 MRI findings in 400 prolapsed discs of LBP patients
Variable | Number (%) |
|---|---|
Pfirrmann grading score | |
 I | 8 (2) |
 II | 56 (14) |
 III | 152 (38) |
 VI | 140 (35) |
 V | 44 (11) |
Disc morphology | |
 Normal | 52 (13) |
 Bulge | 130 (32.5) |
 Protrusion | 192 (48) |
 Extrusion & sequestration | 26 (6.5) |
Nerve root compression | |
 0 (normal) | 124 (31) |
 I (contact) | 108 (27) |
 II (deviation) | 88 (22) |
 III (compression) | 80 (20) |
Spinal canal stenosis | 18 (18%) |
Osteoarthritis facet joint | 42 (42%) |
Hypertrophy of ligamentum flavum | 21 (21%) |