Age.

no prolapsed

Disc herniation

Disc sequestrum

Total.

15 - 29

0

3

1

4

30 - 39

5

3

2

10

40 - 49

1

9

3

13

50 - 59

0

11

8

19

60 - 69

0

9

2

11

above 70

0

3

0

3

Total

6

38

16

60