# What is the sartorius?

It is called the sartorius. Gray's Anatomy (1918) describes it as a long, strap-like muscle — the longest muscle in the human body.

## What it means

- A long, strap-like muscle — the longest muscle in the human body.
- Named from the Latin for 'tailor', after the cross-legged posture it produces.
- Bends the hip and knee and rotates the thigh outward.

## Action steps

1. Runs diagonally across the front of the thigh.
2. Arises from the anterior superior iliac spine.
3. Inserts on the inner surface of the tibia.

## Sources

- [Gray's Anatomy of the Human Body (1918)](https://www.bartleby.com/107/)

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