The pronator quadratus
Pronator quadratus · musculus pronator quadratus
A small square muscle near the wrist that turns the palm down.
What it does
The pronator quadratus is a flat square muscle that stretches across the lower forearm between the ulna and the radius. It starts the movement of turning the palm down and holds the two forearm bones together near the wrist.
Nearby
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Sources
Drafted with AI help; awaiting a human fact-check against these sources.
Open in the 3D atlas · Suggest a correction · Not medical advice.
3D models: Z-Anatomy & BodyParts3D (CC BY-SA 4.0 / 2.1 JP). Card text CC BY 4.0.