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Table 1 The number and direction of perforation stratified to vertebral level

From: Accuracy of thoracic pedicle screw placement in adolescent idiopathic scoliosis patients using the entry point identified by new landmarks: a computed tomography study

 

Total number

Medial perforation

Lateral perforation

Anterior perforation

Grade1

Grade 2

Grade 3

Grade1

Grade 2

Grade 3

Grade1

Grade 2

Grade 3

T1

2

0

0

0

0

0

0

1(convex)

0

0

T2

6

0

0

0

0

0

0

1(concave)

0

0

T3

21

0

0

0

0

0

1(convex)

1(concave)

0

0

T4

54

0

0

0

0

4(1 concave, 3 convex)

1(convex)

3(concave)

1(concave)

0

T5

61

0

0

0

0

0

4(convex)

0

0

0

T6

46

3(2 concave, 1 convex)

1(convex)

0

0

1(convex)

1(convex)

0

0

0

T7

51

1(convex)

0

0

0

0

0

0

0

0

T8

44

1(convex)

0

0

0

2(1 convex, 1 concave)

0

0

0

0

T9

57

0

0

0

0

0

0

0

0

0

T10

44

0

0

0

0

3(concave)

2(concave)

0

0

0

T11

54

0

0

0

1(concave)

0

0

0

0

0

T12

55

0

1(convex)

0

0

0

0

0

0

0