To Increase Flexion of the Carpometacarpal (CMC)joint of the Thumb

Multiple Choice

To increase flexion of the carpometacarpal (CMC) joint of the thumb:

A) Glide the base of the first metacarpal in an ulnar direction on the trapezium.
B) Glide the base of the first metacarpal dorsally on the trapezium.
C) Glide the base of the first metacarpal radially on the trapezium.
D) Glide the base of the first metacarpal in a volar direction on the trapezium.