Can cryotherapy fix my accessory navicular

Today I was doing a consultation with a runner who has a thing called an "accessory navicular." She thought that the bump was much more swollen than normal.  She had basically rolled her ankle and banged that bone into a rock and then she was having some swelling there over the arch. She did a form of cryotherapy called the contrast bath routine to reduce the inflammation.  It suddenly got much smaller. Like the bone shrank. How can that happen?  If I have an accessory navicular bone in my foot and I do the contrast bath routine, will that fix it?  Well, that is a great question and that is what we're talking about today on the Doc On The Run Podcast.