Bledsoe Ninja LSM Back Brace. The Ninja is a modular system built upon a comfortable yet supportive belt with a 6:1 mechanical advantage compression system, utilizing a single pull strap. One easy pull securely forms the Ninja to the patient's torso and provides intra-abdominal compression, reducing the load on intervertebral discs. The Ninja's unique strap design is more robust than a traditional string brace, making it more durable for long-term use. Best of all, the Ninja is a progressive orthosis—as the patient heals, the support and control can be progressively diminished.