Table 6.
Results of the MRI evaluation for test subjects of the control group (group N, n = 30 subjects) and the group of patients with rheumatoid arthritis (group RA, n = 30 patients).
| MRI findings | Group N | Group RA | ||
|---|---|---|---|---|
| left | right | left | right | |
| Sample size (n individuals/n TMJs) | 30 | 30 | 30 | 30 |
|
| ||||
| Condylar morphology | ||||
| Convex | 67% | 73% | 53% | 50% |
| Flattening | 33% | 20% | 17% | 30% |
| Deformation | 0% | 0% | 43% | 40% |
| Gable shaped/pointed angle | 3% | 7% | 3% | 3% |
| Compacta (condyle) | ||||
| No pathological findings | 90% | 78% | 20% | 23% |
| Erosion | 0% | 6% | 40% | 47% |
| Osteophyte formation | 10% | 16% | 80% | 67% |
| Spongiosa (condyle) | ||||
| No pathological findings | 100% | 100% | 50% | 47% |
| Degeneration | 0% | 0% | 50% | 53% |
| Fossa morphology | ||||
| No pathological findings | 97% | 90% | 37% | 43% |
| Erosion | 0% | 0% | 17% | 23% |
| Osteophyte formation | 3% | 10% | 60% | 57% |
| Disk morphology | ||||
| Biconcave | 73% | 53% | 57% | 60% |
| Overall/central thinning | 3% | 7% | 30% | 37% |
| Biplanar | 23% | 43% | 17% | 20% |
| Flattening in the marginal area | 20% | 27% | 10% | 13% |
| Thickening in the marginal area | 7% | 0% | 0% | 0% |
| Deformation | 0% | 0% | 17% | 13% |
| Perforation | 0% | 0% | 3% | 7% |
| Destroyed/fragmented | 0% | 0% | 7% | 3% |
| Overall thickening | 3% | 3% | 3% | 0% |