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Article History

Received: 28 March 2018

Accepted: 15 August 2018

First Online: 29 August 2018

Ethics approval and consent to participate

: The work presented in this paper obtained the IRB approval of our Institution (Comitato etico dell’ IRCCS Istituto Ortopedico Rizzoli, prot.gen. 0011803), and all patients enrolled signed the informed consent.

: Written informed consent for publication of their clinical details and/or clinical images was obtained from the patient/parent/guardian/ relative of the patient. A copy of the consent form is available for review by the Editor of this journal.

: The authors declare that they have no competing interests.

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