Segmental spinal instrumentation with L-rods.

LRI is a relatively new and highly effective technique of spinal fixation. Because the need for a cast or orthosis after the operation is eliminated, it is especially applicable to scoliosis of neuromuscular origin. The early success with segmental fixation has stimulated much laboratory and clinical investigation that seems certain to make operative treatment for most spine deformities more effective. With LRI the assets of secure fixation and adaptability are gained at the expense of more complex surgery, longer operating time, greater blood loss, and probable higher risk of neural injury.