Pudendal Nerve (S2-S4)

Authors

Affiliations

Nate Yomogida, PT, DPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, PT, DPT

Doctor of Physical Therapy

B.A. in Neuroscience

Roots

S2, S3, S4¹

Pathway

• Thru alcocks canal
• Post/med to ant lateral:
• NAVN
  • Pudendal Nerve
  • Internal pudendal Artery and then Vein
  • Nerve to obt internus

Motor innervation

Table 1: Pudendal Nerve Muscular innervations

Muscle	Origin	Insertion	Innervation	Action

Call the function

gt_table <- gt_oian(identifier_col, filter_patterns, display_columns, table_title)

gt_table

Direct Branches

Cutaneous Innervation

Dysfunction

• Deep gluteal syndrome is an increasingly recognized disease entity, caused by compression of the sciatic or pudendal nerve due to non-discogenic pelvic lesions

Anal Reflex

Reflexive contraction of the external anal sphincter upon stroking the skin around the anus

• Afferent: Pudendal nerve
• Efferent: S2-S4

Entrapment

1.

Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.