A positioning device includes a base extending in a horizontal plane, a support post extending along a vertical axis, a detachable headrest subassembly attached to an end of the support post opposite the base, an arm rest subassembly attached to the support post between the headrest subassembly and the base, a thoracic support subassembly attached to the support post between the armrest subassembly and the base, A thoracic support cushion is attached to the support post by a bar. The attachment is reconfigurable to vary an orientation and location of the cushion with respect to the vertical axis, a footrest subassembly attached to the support post between the thoracic support subassembly and the base, and a digital device holder attached to the positioned device by a flexible arm, the flexible arm configured to support a digital device in view of the patient during use of the positioning device.