How To Perform Ghusl With Bandages
In such a case, you can leave that portion dry. If it is not possible to leave it completely dry, then you also have the option to do Tamayyum in lieu of Ghusl. In such matters, the principle is to provide EASE, as Quran says: يُرِيدُ اللَّهُ بِكُمُ الْيُسْرَ وَلَا يُرِيدُ بِكُمُ الْعُسْرَ God desires ease for you and does not want to be harsh with you . (2:185)
If it is not possible or make it unusually difficult for you to do wudu in this condition, You can do tayammumm. if You have done Wudu, and did Masah on bandage and then the bandage is changed you should do Masah on the fresh bandage.
Would it be permissible to just leave the foot and do all the steps of wudu besides washing the feet as even masah might cause harm