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DONJOY EXOS Form II 637 (Lumbosacral Orthoses)

The Exos FORM™ II 637 provides a higher degree of spinal support and relief from a wide range of indications from acute lower back pain to post-operative support. The Exos FORM™ II 637 provides superior sagittal and coronal control and support from T9-S1.


The BOA® Fit System is a dial-based performance fit system that is engineered with high quality, durable materials that enable a microadjustable connection that’s built to perform. Each unique configuration is engineered for power without compromising precision in order to deliver a seamless connection between equipment and body.

  • V-STX™ Material

    A patented, thermoformable material used with the posterior, anterior and lordotic inserts, allows for true customization and ideal patient fit.
  • ComfortCORE™ Foam

    Conforms to the unique contours of a patient’s body, adjusts instantly to individual movements.
  • Diamond2 Grid™

    Uniquely designed construct, delivers patients’ a more durable, longer-wearing brace.
  • BOA® Fit System

    The micro-adjustable BOA® Fit System allows for a fast, effortless, precision fit through a customizable and seamless level of support.
  • Adjustable Belt Wings

    Modifiable belt accommodates varying patient body structures for optimal fit.
  • Modular Design

    Step-up / Step-down design allows for single brace use through rehabilitation and recovery.
  • Semi-Universal Sizing

    Removable circumference tape allows for accurate patient sizing.


Waist CircumferenceHeight (Recommended)Size
28 - 50 in (71 - 127 cm)≤ 69 in (≤ 175 cm)S/M
51 - 61 in (130 - 155cm)≥ 69 in (≥ 175 cm)L/XL