It depends on what type of trauma it is. Many times, the trauma can cause a cut or laceration and sometimes when it is closed the multiple layers that the cut goes through may not be closed individually. This can lead to some layers not being properly opposed and hence a lack of tissue.

The correction of this can entail reclosing the area in multiple layers to bring back the tissue. If it is due to volume loss from just the pure impact, you can graft fat into the area from your abdomen. If you don’t want to use fat, you can use other dermal fillers to do the same but not with the more permanent nature that fat can sometimes possess when done right. Another option is to transfer tissue from an adjacent area.