spiral ligament

{{Short description|Fibrous cushion located in the inner ear in humans}}

{{Infobox anatomy

| Name = Spiral ligament

| Latin = ligamentum spirale ductus cochlearis

| Image = Gray929.png

| Caption = Floor of ductus cochlearis.

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The spiral ligament is a fibrous cushion located between the stria vascularis and the bony otic capsule.{{Cite book|last=Haschek|first=Wanda M.|last2=Rousseaux|first2=Colin G.|last3= Wallig|first3=Matthew A.|url=http://www.clinicalkey.com/dura/browse/bookChapter/3-s2.0-C20101678509|title=Haschek and Rousseaux's handbook of toxicologic pathology|date=2013|publisher=Academic Press|isbn=978-0-12-415765-1|location=Amsterdam|language=English|oclc=849352060}}

The periosteum, forming the outer wall of the cochlear duct ({{langx|la|ductus cochlearis}}), is greatly thickened and altered in character.