
Origin: Shaft of radius; interosseous membrane
Insertion: Base of proximal phalanx of thumb
Action: Extension at joints of thumb, abduction at wrist
Image © 2024 Martijn Froeling. Licensed under the 3-Clause BSD License.

Image © 2024 Martijn Froeling

Image © 2024 Martijn Froeling

Image © 2024 Martijn Froeling