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. 2021 Feb 11;12:2151459321990640. doi: 10.1177/2151459321990640

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© The Author(s) 2021

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Case 1. A 74-year-old female pertrochanteric hip fracture treated with closed reduction and InterTAN nail fixation. A, The fracture was AO/OTA-type 31A2.2. B and C, During operation, percutaneous instrument was applied for anterior cortex reduction. D and E, Fluoroscopy after operation, the fracture reduction quality and implant position were good. Note the setscrew was tightened and locked to avoid head-neck sliding after operation. F, The fracture was not healed in 4 months. G, As the bone quality was good and the instrument was strong, no lag screw cutout nor nail broken occurred yet in 7 months. Coronal CT reconstruction showed non-union. Sclerotic change was seen at the fracture site.