belt for a body brace is disclosed the belt can be secured to the inside of a posterior portion of the body brace and is secured about the patient 39 s waist and upper hip region engaging the iliac crests of the patient and providing additional pressure and stabilization force adjustable hook and loop fastening elements can be used to fasten the iliac crest belt the belt is intended for use in body braces of the type for immobilizing or stabilizing a patient 39 s spine in a post surgical therapeutic application or for treating abnormal spinal curvature which brace may include body conforming front and back shell elements molded from plastic and adjustable strap elements affixed thereto for attaching the shells together around the torso of the patient with a selected compressive force application_number US 70386000 A description referring now to the drawings there is shown in fig1 and 2 a body brace utilizing an adjustable interlocking iliac crest constructed according to the teachings of the present invention the body brace being represented generally by reference numeral 11 in fig3 body brace 11 is shown on a patient p body brace 11 includes a back shell 13 and a front shell 15 back shell 13 can be constructed of an outer layer 14 1 of a substantially rigid plastic material such as high density polyethylene hdpe or the like and an inner liner layer 14 2 of a relatively soft compressible foam material such as polyurethane or a similar material a suitable.