Disclosed is a abdominal splinting device to stabilize and support a womans abdomen during pregnancy and to be used in treatment of diastasis recti in postnatal women. The abdominal splinting device has a back support panel with a central region and opposing first and second side regions, and arms extending from the side regions, where the arms each have a length sufficient to contact the opposite side region when wrapped about a humans trunk region. Also disclosed is a method of treating diastasis recti using the abdominal splinting device. The method includes the steps of providing a abdominal splinting device, centering the abdominal splinting device about a users torso, applying manual traction to the users rectus abdominis to bring the two opposing halves of the rectus abdominis near to each other, affixing the arms to the back support panel, and instructing the user to perform abdominal strengthening exercises.
