I have been reading.... https://www.gardeningknowhow.com/edible/fruits/oranges/pruning-orange-trees.htm In it, there is a reference to sprouts and also the tree\'s collar. Do you have photos of these?
Orange Tree Triming
Certified GKH Gardening Expert
I do not believe that we have a photo of this. But the collar is the enlarged portion that develops at the base of each branch. Cut down to this swollen part. It needs to retain the collar to protect against infection. The new sprouts just refers to any new growth.