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. 2017 Mar 13;41(2):206–211. doi: 10.1097/RCT.0000000000000515

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Copyright © 2016 The Author(s). Published by Wolters Kluwer Health, Inc.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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Magnetic resonance imaging at the time of follow-up was classified into 4 grades from grade I for good morphological recovery to grade IV for poor recovery. A, Grade I: taut and straight band. B Grade II: straight band with partial thinning. C Grade III: thinned. D, Grade IV: unclear.