Influence of X Stop on neural foramina and spinal canal area in spinal stenosis.

摘要: Study Design. Measurements of cross sections exit foramen and spinal canal were performed before after placement X Stop in physiologic postures using positional MR scanner at the stenosed level patients with lumbar stenosis. Objective. To quantify effect implant vivo on spine instrumented levels various postures. Summary Background Data. Dimensions neural decrease from flexion to extension. Symptoms stenosis occur typically standing or The device is designed distract posterior elements stenotic segment place it treat neurogenic claudication. We think that will improve dimension Methods. Twenty-six underwent a one- two-level procedure. All had preoperative postoperative MRI standing, supine, sitting carried out images acquired. Results. Significant increase dimensions area demonstrated surgery. Conclusions. improves degree central foraminal vivo.