What declension is genu meaning "knee". Decline it.

genu is a fourth declension neuter noun. It declines in the order of cases nominative, vocative, accusative, genitive, dative, ablative, in the singular and plural forms, like so: SINGULAR - genu, genu, genu, genus, genu, genu; PLURAL - genua, genua, genua, genuum, genibus, genibus