Lumbosacral Plexus


(Depending on size)

  • Analogous to the brachial plexus, the lumbosacral plexus is a series of nerve convergences and separations which ultimately combine into several large terminal nerves.
  • Plexi form a protective mechanism in that if one nerve root is damaged, a particular muscle might be weakened, but function would not be completely lost.
  • The terminal nerves in the legs generally follow the course of the deep vasculature.
  • Terminal sensory nerves to the feet are particularly vulnerable to diabetes, resulting in peripheral diabetic neuropathy. This frequently contributes to foot infections and the need for amputation.