[Table/Fig-31]:
Different variables like Herniation, Disc Extrusion, Disc Bulge, Osteophytes, Spinal Canal Narrowing, Narrowing of lateral recess, Compression of neural foramen, Facetal Arthropathy, Ligamentum Flavum Thickening and their correlation with the Intervertebral disc level.
| Inter-vertebral Disc Level | Herniation (n= 150) | Disc Extrusion (n = 42) | Disc Bulge (n = 66) | Osteophytes (n = 17) | Spinal Canal Narrowing (n = 56) | Narrowing of lateral recess (n = 127) | Compression of neural foramen (n = 127) | Facetal Arthropathy (n =209) | Ligamentum Flavum Thickening (n = 209) |
|---|---|---|---|---|---|---|---|---|---|
| D10 – D11 | - | - | - | - | - | - | - | 1(0.47%) | 1(0.47%) |
| D11 – D12 | - | - | - | - | - | - | - | 1(0.47%) | 1(0.47%) |
| D12- L1 | 1(0.67%) | 1(2.38%) | 6(9.09%) | 1(5.88%) | - | 1(0.79%) | 1(0.79%) | 1(0.47%) | 1(0.47%) |
| L1 – L2 | 3(2%) | 1(2.38%) | 10(15.15%) | 1(5.88%) | 1(1.78%) | 2(1.57%) | 2(1.57%) | 9(4.30%) | 9(4.30%) |
| L2 – L3 | 11(7.33%) | 4(9.52%) | 8(12.12%) | 3(17.65%) | 6(10.71%) | 8(6.30%) | 8(6.30%) | 21(10.04%) | 21(10.04%) |
| L3 – L4 | 21(14%) | 6(14.29%) | 17(25.76%) # | 5(29.41%) # | 13(23.21%) | 21(16.54%) | 21(16.54%) | 40(19.13%) | 40(19.13%) |
| L4 – L5 | 68(45.33%) # | 18(42.86%) # | 17(25.76%) # | 2(11.76%) | 25(44.64%) # | 60(47.24%) # | 60(47.24%) # | 86(41.14%) # | 86(41.14%) # |
| L5 – S1 | 45(30%) | 12(28.57%) | 7(10.61%) | 5(29.41%) # | 10(17.85%) | 34(26.77%) | 34(26.77%) | 48(22.96%) | 48(22.96%) |
| S1 – S2 | 1(0.67%) | - | 1(1.52%) | - | 1(1.78%) | 1(0.79%) | 1(0.79%) | 2(0.96%) | 2(0.96%) |
# indicates most common intervertebral disc level of involvement