
Origin: Proximal dorsal surfaces of ulna and radius
Insertion: Lateral margin of first metacarpal bone and trapezium
Action: Adduction at joints of thumb and wrist
Image © 2024 Martijn Froeling. Licensed under the 3-Clause BSD License.

Image © 2024 Martijn Froeling

Image © 2024 Martijn Froeling

Image © 2024 Martijn Froeling