All of the following structures pass through lesser sciatic foramen EXCEPT:
**Core Concept**
The lesser sciatic foramen is an anatomical passage in the pelvis through which several important structures pass. It is bounded by the **sacrotuberous** and **sacospinous ligaments**. Understanding the anatomy of this region is crucial for diagnosing and managing conditions affecting the pelvic floor and surrounding structures.
**Why the Correct Answer is Right**
The correct answer is based on the anatomy of the pelvic floor. The **pudendal nerve** and **internal pudendal vessels** pass through the lesser sciatic foramen, as does the **obturator internus tendon**.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the **pudendal nerve** indeed passes through the lesser sciatic foramen.
**Option B:** This option is incorrect because the **internal pudendal vessels** also pass through this foramen.
**Option C:** This option is incorrect as it is the correct answer and does not belong in this section.
**Clinical Pearl / High-Yield Fact**
The lesser sciatic foramen is a key anatomical landmark, especially in the context of **pudendal nerve** blocks or damage. Remembering which structures pass through it can help in diagnosing conditions like **pudendal neuralgia**.
**Correct Answer:** D. Superior gluteal vessels