Numbness in my left pinky and ring finger and chronic back pain also ?

Numbness in hand: The most common causes of numbness in the pinky and ring finger is compression of the nerve at one of four places: the wrist, the elbow, the armpit, or the neck. The condition is unrelated to the chronic low back pain, although it is possible that you have arthritis in your neck and your low back that underlies both symptoms.