Yes it does feel like I can fit my fingernail in my traverse palatine suture. It is harder to find my midpalatal suture because of my torus palatinus and my incisive suture because of the rugae. I think it is normal to be able to fit your fingernail in cranial sutures. You could compare to the sagittal, labdoid, or coronal sutures on the top of your head. Also the Walker-Murdoch sign is positive for me because I have pretty thin wrists, but the Steinberg sign is negative for me.

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