This trial compares detethering surgery and spinal column shortening surgery, two treatments for adults with recurrent tethered cord syndrome (TCS), a neurological disorder where the spinal cord becomes abnormally attached to tissue. Detethering surgery carries a higher risk of postoperative complications such as cerebrospinal fluid (CSF) leakage, while spinal column shortening surgery's comparative efficacy is unclear. This study aims to clarify the optimal surgical management for recurrent TCS in adults, assessing postoperative complication rate and improvement of symptoms.