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.
Carpal tunnel syndrome affects the median nerve in the arm, but ulnar nerve entrapment affects the ulnar nerve that runs on the little fingerâs side of the arm. This most commonly causes numbness in the pinkie and ring fingers. Less common causes of finger numbness can include: alcohol use disorder. amyloidosis.