Etiology of post-uterosacral suspension neuropathies.

Introduction and hypothesis: The goal of our investigation was to find a neurological explanation for neuropathies reported following some uterosacral ligament suspension (USLS) [2-3].

Methods: We dissected the neural structures beneath the USL in seven female, adult, embalmed cadavers. We made a literature review to determine the spinal nerve sensory fiber composition of each exposed neural structure and the dermatome(s) that it innervates. We then compared anticipated sensory neuropathies for each neural structure with neuropathies following USLS to determine which neural structure entrapment could explain the reported symptoms.

Results: Several neural structures located beneath the uterosacral ligament (USL) are vulnerable to suture entrapment during USLS. Anticipated clinical outcomes of entrapments are discussed.

Conclusions: Entrapment of S2 sensory fibers in the second trunk of the sacral plexus or in the intrapelvic portion of the sciatic nerve is the most plausible etiology for reported neuropathies following USLS.