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Table 4 Statistical analysis of the incidence of ASD diagnosed by MRI in different groups of patients

From: Early developed ASD (adjacent segmental disease) in patients after surgical treatment of the spine due to cancer metastases

Group

A

B

C

D

E

F

G

Number of ASD diagnosed by MRI according to the Oner, Rijt, and Ramos classifications

N (%)

31 (16)

87 (45)

6 (3)

12 (6)

9 (5)

31 (16)

18 (9)

 ASD N (%)

3 (10)

11 (13)

0 (0)

3 (25)

1 (11)

3 (10)

1 (6)

Number of ASD diagnosed by MRI according to the Pfirrmann and Metzdorf classifications

N (%)

31 (16)

87 (45)

6 (3)

12 (6)

9 (5)

31 (16)

18 (9)

 ASD N (%)

6 (19)

20 (23)

1 (17)

6 (50)

2 (22)

7 (23)

4 (22)

  1. Results are presented as a number and percent
  2. ASD adjacent segment disease
  3. p < 0.05 for inter-group difference χ 2