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. 2016 Oct 6;11(10):e0163438. doi: 10.1371/journal.pone.0163438

Fig 2. Wear plot graphs of the cup (most left) and head (middle and right) of patient no 2. 70% points used for estimation of wear.

Fig 2

The green area represents the estimated original surface. The red area represents the wear and is defined as a negative deviation from the original surface.