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. 2019 Oct 15;12:771–784. doi: 10.2147/CCID.S212599

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© 2019 Kim.

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Skin roughness was evaluated by the areal topography with an optical technique using a microscope. Surface mapping was made, and the patchwork method was determined by the sum of triangle areas (1/2× base × height of a triangle). Before treatment, the sum of the triangle areas was 366 (left panel). Seven months after treatment, the sum of triangle areas decreased to 231.5, and it revealed that roughness of skin improved in the ischial area after multi layered calcium hydroxylapatite (CaHA) injection (right panel).