Table 2.

Hartofilakidis et al. (9) classification of hip dysplasia.

Hartofilakidis classification	Definition
Dysplastic	Subluxated but the femoral head is contained in the true acetabulum
Low dislocation	Femoral head articulates with a false acetabulum, which overlaps the true acetabulum
High dislocation	Femoral head articulates with a false acetabulum, which is proximal, is posterior, and has no overlap with the true acetabulum