Spinal nerves travel from the vertebral column to the extremities. When a nerve is compressed at its root, the brain interprets the signal as coming from wherever that nerve ends up. A cervical nerve root compression produces shoulder or arm symptoms. A lumbar compression produces hip or leg symptoms. The pain is real, but its origin is spinal.
This referral pattern is why pinched nerve relief near San Luis Obispo requires evaluation of the spine, not the extremity. Dr. Bronstein at Beacon Clinic of Chiropractic traces the symptom back to its source before beginning treatment.