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Maxillofacial Plastic and Reconstructive Surgery

Table 3 The relationship between the position of the disc on MRI and the displacement of the condylar head on plain X-rays

From: Characteristics of temporomandibular joint structures after mandibular condyle fractures revealed by magnetic resonance imaging

MRI plain X-rays

N

 

Position of disc

 

At eminence

In fossa

Normal

Anterior

Down

Anterior + down

Dislocation

18

17 (36)

  

1 (2)

 

Displacement

10

5 (11)

 

1 (2)

2 (4)

2 (4)

No displacement

15

 

3 (6)

2 (4)

2 (4)

8 (17)

Lateral displacement

2

 

2 (4)

   

Chip fracture

2

1 (2)

   

1 (2)

Contralateral

21

1 (5)

4 (19)

4 (19)

1 (5)

11 (52)

  1. ( ): % in total fractured or contralateral joints
  2. p < 0.01 (statistically significant for disc position and fracture, chi-square test)
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