Correlation between Femoral Head Lateralization and Bone Morphology in Primary Hip Osteoarthritis

Figure 1

a (mm) is the distance between the ilioischial line and the medial aspect of the femoral head. When the distance was ≥10 mm, the hip was categorized as group L, and when it was <10 mm it was categorized as group N. In this case, a is 12.2 mm, so this hip is categorized as group L.