Gbuyg,
Thanks for posting, great question!
After surgery, your body will have a good amount of swelling and sometimes some inflammation, just from the invasiveness. You should treat with ColdCure Shoulder for roughly a week or two prior to using BFST; you want to make sure the swelling and inflammation is under control before using BFST Shoulder on the treated area. The BFST would not cause any additional injuries post surgery when used in the proper conditions.
Regards,
CS