en_tn_condensed/pro/17/19.md

causes bones to be broken

This means that someone will trip on the threshold and break bones, probably in their foot. AT: "is sure to cause someone trip and break their the bones in their foot" or "is sure to cause someone to trip and injure himself" (See: rc://en/ta/man/translate/figs-explicit)

who has a crooked heart

The "heart" represents a person's feelings, attitudes and motivations. AT: "who is deceptive" or "who is dishonest" (See: rc://en/ta/man/translate/figs-metonymy)

has a perverse tongue

The "tongue" represents a person's speech. AT: "speaks perversely" or "speaks wickedly" (See: rc://en/ta/man/translate/figs-metonymy)

falls into calamity

"falls into trouble" To "fall into" something means to get into that situation. AT: "will have calamity" (See: rc://en/ta/man/translate/figs-idiom)