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. 2017 May 31;5(5):2325967117708307. doi: 10.1177/2325967117708307

Figure 3.

Figure 3.

Two different acetabular roof ratios were introduced in the study by Boone et al.5 The first ratio is calculated by dividing the total roof length (roof 1 + roof 2) by roof 2, and the other by dividing roof 1 by roof 2.