The vertebral axis is only one direction, and our bodies have two additional directions: front to back, and side to side. The terms for the front to back direction are: Anterior: Toward the front. The nose is on the anterior side of the head. Posterior: Toward the rear.
If you're experiencing numb fingers, especially in the left hand pinky and ring fingers, the most likely cause is ulnar nerve compression or entrapment. The ulnar nerve runs from the spine, past the shoulder blades, down the arm, across the outer bend of the elbow and down the arm to the pinky and ring fingers.
As well as tingling, numbness and pain, you may feel like the part of the body affected is stiff. This is due to the brain's message of 'move' not getting through to the muscles properly. If you have a pinched nerve in your neck, for instance, then you may have difficulty looking in certain directions.s well as tingling, numbness and pain, you may feel like the part of the body affected is stiff. This is due to the brain's message of 'move' not getting through to the muscles properly. If you have a pinched nerve in your neck, for instance, then you may have difficulty looking in certain directions.