Finding | n | Percentage of Total | Percentage of Abnormal |
---|---|---|---|
By individual TMJ | 370 | NA | NA |
Active or chronic arthritis | 142 | 38 | NA |
Active arthritis, any | 135 | 36 | 95 |
Synovial fluid alone | 19 | 5.1 | 14 |
Enhancement alone | 85 | 23 | 63 |
Synovial fluid and enhancement | 31 | 8.4 | 23 |
Chronic arthritis, any | 26 | 7.0 | 18 |
Erosions alone | 12 | 3.2 | 46 |
Condylar flattening alone | 12 | 3.2 | 46 |
Combination of findings of chronic arthritis | 2 | 0.5 | 7.6 |
Acute arthritis without chronic changes | 115 | 31 | 81 |
Chronic arthritis without acute changes | 6 | 1.6 | 4.2 |
Acute and chronic changes | 20 | 5.4 | 14 |
By individual patient | 185 | NA | NA |
Any abnormality | 81 | 43 | NA |
Active arthritis without chronic changes | 59 | 32 | 73 |
Chronic arthritis without acute changes | 2 | 1.1 | 2.4 |
Active and chronic changes | 20 | 11 | 24 |
MRI: magnetic resonance imaging; TMJ: temporomandibular joint. NA: not applicable.