There is provided a customizable orthotic bracing device, including an exoskeletal quasi-spinal column (12) extendable along the back of a patient and attachable to a body portion of the patient by means of a plurality of belt means (14, 14') substantially surrounding the body portion at different points thereof, with the quasi-spinal column being comprised of a plurality of stackable and interlinkable segmental units (20), each unit consisting of a number of interlinkable sub-units (22, 24, 26, 28), characterized in that the position of the sub-units relative to one another can be adjusted in at least three degrees of freedom.