Square muscle of the thigh

About the square muscle of the thigh of the horse

Square muscle of the thigh is a muscle of the back leg (pelvic limb), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculus quadratus femoris. You can turn it above, see it in place in the back leg of the horse, and open it inside the whole animal in Vetomica.

Where it runs from and to

A muscle is told apart from its neighbours by what it takes hold of at each end, which is also what decides what it does when it shortens.

Origin

The ventral surface of the ischium.

Insertion

The caudal surface of the femur, about the level of the third trochanter.

Action

Extends the hip and turns the thigh outward.

Nerve

The sciatic nerve.

Written for Vetomica in its own words from the standard reference anatomy of the horse; the books it was checked against are listed below.

Terminology

English

Square muscle of the thigh

Latin (NAV)

Musculus quadratus femoris

Status

A valid term in the Nomina Anatomica Veterinaria

Questions about the square muscle of the thigh

What is the Latin name of the square muscle of the thigh?

In the Nomina Anatomica Veterinaria, the square muscle of the thigh is called Musculus quadratus femoris.

Where is the square muscle of the thigh of the horse?

Square muscle of the thigh is a muscle of the back leg (pelvic limb), one on each side of the body.

Where does the square muscle of the thigh originate and insert?

Origin: The ventral surface of the ischium. Insertion: The caudal surface of the femur, about the level of the third trochanter.

What nerve supplies the square muscle of the thigh?

The sciatic nerve.

What does the square muscle of the thigh do?

Extends the hip and turns the thigh outward.