Abstract: A biplanar posting device having a board with a rear edge and a front edge and lines passing from the rear edge toward the front edge diverging toward the front edge and intersecting the front edge at an angle of about 70 degrees with a plate fixed to the upper surface of the board having end planar portions held in contact with the board and central diverging portions in the form of two flat planes diverging from the upper surface of the board at about 4 degrees and intersecting the planes in contact with the board at a line that overlays the diverging lines. An orthotic properly placed on the device and packed with plastic beneath the heel portion will inherently be formed with a lower surface to correct a defect in the bones of a patient.