Pathoetiology of Levator Ani Syndrome and Its Treatment With Translumbosacral Neuromodulation Therapy.

Abstract

The pathoetiology and treatment of levator ani syndrome (LAS) remain unclear. We evaluated pathophysiology using translumbosacral motor-evoked potentials and anorectal manometry in patients with LAS and compared with healthy controls. A cohort underwent translumbosacral neuromodulation therapy (TNT). Lumbar and sacral motor-evoked potential latencies were prolonged in 32 patients with LAS compared with 31 controls ( P < 0.013), with higher prevalence of anal neuropathy ( P = 0.026). TNT improved anorectal pain ( P = 0.003) and neuropathy ( P < 0.02) in 13 patients with LAS. Patients with LAS demonstrate significant lumbosacral neuropathy that may cause anorectal pain. TNT improved anorectal pain and neuropathy, providing a novel therapeutic option.