Table 1.

TMJ MRI scoring system.

Acute, 0–7 PointsChronic, 0–14 Points
Marrow edemaCondyle
0: None0: Normal
1: Edema present1: 1/3 flattened
2: 1/3–2/3 flattened
3: Entirely flattened
4: Enlarged
EffusionDisc
0: None0: Normal position and appearance
1: Thin, diffuse1: 1/3 destruction
2: Focal > 1 mm2: 2/3 destruction
3: Entire space > 1 mm3: Complete destruction
EnhancementErosions
0: None0: None
1: 1 mm, mild1: 1/3
2: 1–2 mm, moderate2: 1/3–2/3
3: ≥ 2 mm, severe3: Complete
Pannus
0: None
1: ≤ 1 mm
2: 1–2 mm
3: ≥ 2 mm
Osteophytes
0: None
1: 1 or more
  • TMJ: temporomandibular joint; MRI: magnetic resonance imaging.