Which spinal nerve is likely damaged if you see a patient with shuffling gait?

Common Peroneal Nerve (L4, L5, S1, S2)

The common peroneal nerve (lateral popliteal nerve) innervates the muscles responsible for dorsiflexion of the foot and eversion of the foot. Damage to this nerve can result in a shuffling gait, also known as steppage gait, characterized by high stepping to avoid dragging the toes on the ground.