Tissue expansion
Just opening up a discussion on this. I think the original Circadia would have likely healed faster and been more comfortable had this occured first. Those with Northstars.. is there much discomfort from the skin feeling tight?
https://www.plasticsurgery.org/reconstructive-procedures/tissue-expansion/procedure
https://www.indiamart.com/proddetail/tissue-expander-12370755330.html