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. 2021 Feb;9(3):212. doi: 10.21037/atm-20-3488

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2021 Annals of Translational Medicine. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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Timing of each step of the surgical procedure and total surgical time of all subgroups; data are presented as mean (95% CI). In patients with Crowe I developmental dysplasia of the hip (DDH), the surgical time required for grinding of the acetabulum in the patient-specific instrument (PSI) group was greater than that in the conventional operation (CO) group, and the time required to install the cup in the PSI group was greater than that in the CO group. In patients with Crowe III and Crowe IV DDH, a shorter surgical time was required for grinding of the acetabulum and installation of the cup in the PSI groups than in the CO groups. In patients with Crowe III DDH, the total surgical time required for the PSI group was shorter than that required for the CO group.