I say, and with God's success: The removal of the bandage or cloth before healing does not invalidate [the state of purity]; because the excuse remains, which is the fracture or wound. However, if it falls off after healing, it is necessary to wash that specific area, especially if one is in a state of ablution. This is different from when one removes one of the shoes, where it is required to wash both feet. There is no difference in this between minor impurity and major impurity. Refer to: Sharh al-Wiqayah p. 120, al-Hadiyyah al-‘Alaiyyah p. 42-43, Nihayat al-Murad p. 400, and God knows best.