This can be quantified using relative failure force, which is the bone failure force of a vertebra divided by the body weight of the pterosaur that it belongs to, estimated at  for Arambourgiania and Hatzegopteryx.
The strength of a vertebra's ability to withstand pressure can be quantified using relative failure force, which is calculated by dividing the bone strength of a vertebra by the body weight of the pterosaur it belongs to. This value has been estimated at  for Arambourgiania and Hatzegopteryx.