SAN CARLOS, Calif., Dec. 4, 2019 /PRNewswire/ — Empirical Spine, Inc., maker of the LimiFlex Paraspinous Tension Band, today announced completion of enrollment in the investigational arm of its U.S. IDE trial studying the use of the LimiFlex with a decompression for patients suffering from degenerative spondylolisthesis with lumbar spinal stenosis.  The trial compares outcomes of patients who …