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Table 3 Decompressed levels number comparison

From: Risk factors for upper adjacent segment degeneration after multi-level posterior lumbar spinal fusion surgery

Decompressed levels

Group A (n = 22)

Group B (n = 49)

T12–L1

2

0

T12–L2

0

1

L1–L3

2

2

L1–L4

1

1

L2–L3

5

12

L2–L4

0

2

L2–L5

0

9

L3–L5

2

13

L3–S1

0

9

L4–L5

7

0

L4–S1

3

0

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X