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Egyptian Journal of Radiology and Nuclear Medicine

Table 1 Comparison between static and dynamic MRI in evaluation of disc position and mobility in the examined joints (n = 80)

From: Can dynamic magnetic resonance imaging replace static magnetic resonance sequences in evaluation of temporomandibular joint dysfunction?

 

Static MRI

Dynamic MRI

p

No.

%

No.

%

Disc position

Normal

49

61.25

50

62.5

 

ADDwR

11

13.75

13

16.25

< 0.001*

ADDwNR

18

22.5

16

20.0

< 0.001*

Medial

4

5.0

0

0.0

–

Lateral

1

1.25

0

0.0

–

Posterior

1

1.25

1

1.25

0.025*

Disc mobility

Normal mobility

78

97.5

76

95.0

0.008*

Stuck disc

2

2.5

4

5.0

  1. Four joints had combined medial and anterior displacement (rotational anteromedial displacement) as reported by static MRI
  2. ADDwR anterior disc displacement with reduction, ADDwNR anterior disc displacement with no reduction, p p value for chi-square test for association between static MRI and dynamic MRI
  3. *Statistically significant at p ≤ 0.05
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