perforating cutaneous nerve perforating cutaneous nerve the perforating cutaneous nerve is a cutaneous nerve that supplies skin over the gluteus maximus muscle. perforating cutaneous nerveplan of sacral and pudendal plexuses.cutaneous nerves of the right lower extremity. front and posterior views. (perforating cutaneous nerve not labeled, but region visible.)detailsfroms2-s3, sacral plexusinnervatesgluteal sulcusidentifierslatinnervus cutaneus perforansta98a14.2.07.036ta26546fma19040anatomical terms of neuroanatomy structure the perforating cutaneous nerve arises from the ventral rami of sacral spinal nerve 2 and sacral spinel nerve 3 of the sacral plexus. it pierces the lower part of the sacrotuberous ligament. it winds around the inferior border of the gluteus maximus muscle. variation the perforating cutaneous nerve may arise from the pudendal nerve. it may be absent. it is estimated to be absent in up to a third of people. it may be replaced by a branch from the posterior cutaneous nerve of thigh. it may also be replaced by a branch from the third and fourth, or fourth and fifth, sacral nerves. the perforating cutaneous may pass around the sacrotuberous ligament (beneath gluteus maximus muscle) rather than piercing it. function the perforating cutaneous nerve supplies the skin covering the medial and lower parts of gluteus maximus.