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Pudendal block — FRCA Primary MCQ

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ModerateAnatomyPudendal blockFRCA Primary

Perineal analgesia is achieved using the bony landmark beside the pudendal nerve. Which anatomical structure is described?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: B — Ischial spine

The pudendal nerve passes near the ischial spine. Inferior border of the rib is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Cervicothoracic sympathetic ganglion is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Cricothyroid membrane is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Ligamentum flavum is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. In Primary FRCA anatomy, the tested structure should explain the block, airway sign or regional complication in the stem.

Reference: Ellis, Feldman & Harrop Anatomy for Anaesthetists; Primary FRCA textbooks