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. 2019 Nov 28;14:397. doi: 10.1186/s13018-019-1440-2

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — A 33-year-old male patient underwent free graft of vascularized iliac bone flap based on deep circumflex iliac vessels for treatment of idiopathic ONFH of the right side. a Preoperative X-ray and b preoperative CT scans showed heterogeneous density of the femoral head. c The iliac bone flap was separated and implanted into the bone groove. Postoperative X-rays at d 3 months, e 10 months, and f postoperative CT scans at 10 months showed no collapse of femoral heads or narrowing of the hip joint spaces