Thumb Abduction

In this video, the motion of bringing the thumb away from the palm is abduction. The motion of abduction is occurring at the 1st carpometacarpal (CMC) joint of the thumb. 1st CMC abduction is demonstrated from a position with the thumb resting on the palm to a position of the thumb moving as far away from the palm as possible as seen from a front or anterior view.



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  • whoa i love how you posted this ironically the same time i’m having a test on this.

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