[tlhIngan Hol] {-rup} or {-beH} ?

In order to indicate that a person is ready to do whatever we use {-rup}. In order to indicate that a device is ready to do whatever we use {-beH}. If however we want to say "his leg was ready to break", do we say {ghorrup 'uSDaj} or {ghorbeH 'uSDaj} ? qunnoH jan puqloD ghoghwIj HablI'vo' vIngeHta'