<prompt> Hyoid bone is closely associated withLudwigs anginaThyroglossal cystBranchial cystCystic hygroma  <response>: Hyoid bone is closely associated with the thyroglossal tract from which thyroglossal cyst fistula originate, thus during surgical excision of the thyroglossal cyst or fistula, the central pa of the hyoid bone is excised otherwise recurrence may occur. Ref : Bailey Love 25e p730 