Fig. 3

Radiostereometric analysis set-up with a direct anteroposterior angle for static recordings (a) and a 45-degree recording angle (b) for dynamic recordings in order to obtain an optimal view of the polyethylene liner
Radiostereometric analysis set-up with a direct anteroposterior angle for static recordings (a) and a 45-degree recording angle (b) for dynamic recordings in order to obtain an optimal view of the polyethylene liner