Final answer:
The proper arm position for the Grashey method is with the hand from the palm backward position to the palm forward position. The scapula should be kept in an upward direction for clear visualization. The foot should face the midline of the body.
Step-by-step explanation:
The proper arm position for the Grashey method is to have the hand from the palm backward position to the palm forward position.
While performing the Grashey method, it is important to keep the scapula in an upward direction to allow for proper visualization of the shoulder joint.
Additionally, the foot should be positioned so that the bottom of the foot faces the midline of the body. This alignment helps to ensure accurate and clear images.