Radial flexion involves which of the following movements?

Radial flexion, also referred to as radial deviation, specifically involves the movement of the wrist where the hand bends toward the thumb. This motion occurs at the wrist joint and is characterized by the thumb moving closer to the forearm, while the pinkie finger moves away. Understanding this movement is crucial for fitness professionals, as it relates to various exercises and activities that engage the wrist, impacting grip strength and range of motion.

The other options do not accurately describe radial flexion: bending toward the pinkie is known as ulnar flexion or ulnar deviation, while the movement of the foot described in option C pertains to ankle dorsiflexion or plantarflexion, rather than wrist movement. Twisting movement of the spine relates to rotation and does not involve radial flexion at the wrist.