Various types of specialized shoe gear and boots have been created to obtain this pressure-relief. Some must be applied by your doctor and are then simply left alone. Others can be removed, when desired, by the patient. This is not necessarily a good thing since the uncooperative patient will remove the device and perhaps not reapply it. It's application is quite labor-intensive, but it does it's job better than any other method.
Ulcers often develop in areas where there has been chronic pressure for many years.
This means the skin in the area will be thin and unhealthy. Healing the ulcer can be very difficult in a case such as this.