Table 2 MRI findings and symptoms at time of revision
Symptoms and findings | N | Percentage |
|---|---|---|
Clinical signs | ||
Pain | 35 | 100 |
Knee joint effusion | 29 | 82.9 |
Instability | 3 | 8.6 |
Decreased flexion | 1 | 2.9 |
Radiographic findings | ||
Osteolysis | 35 | 100 |
Osseous resorption | 22 | 62.9 |
Fibrous membrane around patella button | 21 | 60 |
Patella not centralized | 7 | 20 |
Fracture | 3 (2 only visible on MRI) | 8.6 |
Broken metal ring/migration of button | 3 | 8.6 |