Out of surgery - on way to recovery.
The liner to the hip socket was cracked and replaced.
Ball/fixture is anchored well into the femur with no loosening. No need to replace.
Cup in good shape, still anchored well into the 'perimeter' of the socket.
Significant bone loss 'behind' cup, loss of socket mass . The void was 'liquid filled' with debris which acted as an abrasive wearing down the interior space...pain factor.
Doc- "Data shows best to not remove and replace 'cup' so to not disturb that bone which is holding the existing cup in place". They drained the liquid and packed the void (through holes in the cup) with 'plaster' type bone growth material which stimulates bone growth exceptionally well in animals... 'humans, a significant increase, yet to be fully determined.
Her mobility will be just as good as before surgery with a decrease of pain.
If bone additive/growth stimulant does not 'take' her existing socket/ball attachment will stay in place for as long as it does.... various complications from there on.
He's siding with the data showing positive bone growth, the strength of the existing bone supporting the prosthesis's, Angela's age and "outlook". Diet, exercise and one heck of a positive attitude.
I side with the Doc.
We are so lucky......