Fig. 5

Loosening of the tibial component. The conventional radiograph (a) of patient 6 shows tibial component loosening around the medial plate and stem. CT (b and c) and low-field MRI (d and e) show images of the same knee, where images c and d are the transversal views of b and e at the most distial point of the tibial stem. The CT shows lucency (b-c) and MRI effusion (d-e) around the tibial stem, which are elements suspected of loosening the tibial component