Post navigation Next ArticlePrevious Article Sinker ·6 June 2017 The coffin bone can sink completely in the hoof capsule. This is called a sinker. A sinker is the result of breaking of the lamellar connection around the entire coffin bone instead of just in the toe section. Tweet Share Pin it Comment Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Name * Email * Website Comment By using this form you agree with the storage and handling of your data by this website. * Notify me of new posts by email.