Table 3 Entry point and types of mechanical failure in our study patients

1.Kocher's point(frontal horn)

22

31.4

1.Kink

25

35.7

2.Keens point(occipital horn)

48

68.5

2.Inadvertant suturing of shunt while closing abdomen

7

10

3. Shunt disconnection

6

8.5

4.Air in shunt bulb

2

2.8

5.Wrong placement at ventricular end

10

14.2

6.Shunt migration into the brain parenchyma

5

7.1

7.Shunt migration through the anal canal

1

1.4

8.Pseudomeningocele around catheter valve

3

4.2

9.Placemen of lower end into the preperitoneal space

4

5.7