So far it is known that the bone gains with Evenity are lost if not followed up with another med (anti-resorptive) to keep those gains from disappearing. So they have I presume measured this bone loss. This happens for Forteo and Tymlos also. Prolia can cause something beyond that. You don't just lose what you gained you may become extremely fracture prone. Some have multiple fractures in a short period of time. Very scary.

This has so far not been reported with Forteo, Tymlos, or Evenity. It's best not to mix up bone loss after stopping an anabolic medication with the possible extreme fracture rate that sometimes happens with Prolia. Maybe the phrase rebound effect should be reserved for Prolia. Though in my mind "rebound effect" is not a strong enough warning for what could happen after stopping Prolia.