35 patients with a smooth, threaded acetabular Mecron type prosthesis
were examined with the aid of a table top with wiremarkers and a fixed
30-degree wedge to allow for reproducible positioning. Under fluorosc
opic control, pelvic and spot films were made. The inter- and intraobs
erver variability of anteversion and inclination angle measurements of
the prostheses had a standard deviation of less than 1 degree. The me
thod can be applied to other acetabular prostheses as well.