The dimples on the lower back are small, natural depressions in the skin that appear over the sacroiliac joints, in the area where the pelvis connects to the spine.
From a medical standpoint, they are not a disease or an abnormality. They simply occur because the ligaments that connect the skin to the bone are shorter or more visible in some people.
This creates that small depression that is noticeable when the person is standing or slightly bent over; in anatomy, these are known as “lateral lumbar fossae”.
Why some women have them and others don’t
The presence of these dimples depends mainly on genetics, meaning that if one of the parents has them, their children are more likely to have them as well.
Other factors also play a role, such as the structure of the pelvis, the natural distribution of body fat, and the tension of the ligaments in the lumbar region, and these are not necessarily related to body weight.
Many thin people do not have them, while others with greater body mass may have them; the reason they have historically been considered attractive throughout history is because back dimples have been associated with body aesthetics.
In classical art and Renaissance sculpture, for example, they were represented as an anatomical detail considered harmonious and balanced.
