Excellent four-year results have been reported in a small series of patients with chronic discogenic low back pain treated with a spinal decompression device, VAX-D (Vertebral Axial Decompression). ‘Of the 23 patients who responded, 52% had a pain level of zero, 91% were able to resume their normal daily activities, and 87% were either working or were retired without having back pain as the cause for retirement