Fig. 1From: Clinical and radiographic outcomes after total hip arthroplasty with the NANOS neck preserving hip stem: a 10 to 16-year follow-up studyRadiographic evaluation. Techniques of measurement of the inclination acetabular cup (a), ante-version acetabular cup following method explained by Bachal et al. [37] (b) and osteolysis areas according to the Gruen zones (c)Back to article page