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Table 4 Severity of facet tropisms according to levels

From: Relationship between facet tropism and facet joint degeneration in the sub-axial cervical spine

 

C2-C3

C3-C4

C4-C5

C5-C6

C6-C7

P

Tropism-T

0.005

 Symmetry (%)

137 (68.5)

165 (82.5)

163 (81.5)

159 (79.5)

157 (78.5)

 

 Moderate (%)

43 (21.5)

31 (15.5)

31 (15.5)

32 (16)

33 (16.5)

 

 Severe (%)

20 (10)

4 (2)

6 (3)

9 (4.5)

10 (5)

 

Tropism-S

0.196

 Symmetry (%)

148 (74)

157 (78.5)

141 (70.5)

155 (77.5)

146 (73)

 

 Moderate (%)

42 (21)

27 (13.5)

46 (23)

38 (19)

44 (22)

 

 Severe (%)

10 (5)

16 (8)

13 (6.5)

7 (3.5)

10 (5)

 

Tropism-C

0.000

 Symmetry (%)

122 (61)

155 (77.5)

157 (78.5)

162 (81)

151 (75.5)

 

 Moderate (%)

51 (25.5)

35 (17.5)

37 (18.5)

30 (15)

42 (21)

 

 Severe (%)

27 (13.5)

10 (5)

6 (3)

8 (4)

7 (3.5)

 
  1. Tropism-T difference between right-side and left-side T-angle, Tropism-S difference between right-side and left-side S-angle, Tropism-C difference between right-side and left-side C-angle