| Singular | Plural | |
|---|---|---|
| Nominativ | crurifragius, crurifragius | crurifragii, crurifragii |
| Genitiv | crurifragii, crurifragii | crurifragiorum, crurifragiorum, crurifragium, crurifragium |
| Dativ | crurifragio, crurifragio | crurifragiis, crurifragiis |
| Akkusativ | crurifragiom, crurifragiom, crurifragium, crurifragium | crurifragios, crurifragios |
| Ablativ | crurifragio, crurifragio | crurifragiis, crurifragiis |
| Vokativ | crurifragie, crurifragie | crurifragii, crurifragii |