Back pain is becoming a more frequent reason why doctors exmine patients. The most common cases of spine disease include degeneration of the inter-vertebral discs, trauma and deformity such as soliosus and tumors. For patients where conservative treatment has failed, a range of surgical procedures are available to treat their conditions.

The most renowned treatments for back pain are the fusion method and the golden standard method. But fusion causes excessive loading on the adjacent segments, which leads to degenerative changes within a few years. Also. fractures occur often on the screws and rods because too much stress is inflicted on the rigid instruments, thereby reducing the efficiency of fusion and increasing back pain. The evolution of new procedure and products has been driven by the need to find less invasive and long lasting solutions to spine problems, which preserve the natural anatomy and maintain spine mobility. Out of the many, Dynamic Stabilization Systems have caught the interest of researchers and surgeons for the past few years.
The Bioflex Spring Rod System, is a pedicle screw based instrumentation which consists of Titanium screw and Nitinol Rods. This system utilizes the super-elastic properties of Nitnol (a shape memory alloy), and the high level of durability of Titanium respectively. The strengths of the rod shapes combined with the material properties allow Bioflex to convert abnormal motion segments into physiologic movement segments, preventing degenerative changes in the adjacent segments and reducing instrument failures. The screw head has a design- specific advatage; it has two groove, each of which is insertion spaces for the rods, allowing multilevel fixations and extension of the whole system in case of operation on their sefments. This makes the system connectable, and due to the 3-D flexibility of the rods, natural lordosis is possible without bending the rods during the surgery.