Peroneus Muscles 👉 Trigger points in the peroneus muscles of the lower leg are a common, but often over-looked, source of ankle pain and weakness. 👉 Left untreated, ankle pain and stiffness can become the cause of more serious pain disorders of the hip and knee. 👉 Anyone who suffers from frequent and reoccurring ankle sprains is likely to have trigger points in these muscles. The tendons of peroneus longus and peroneus brevis run from the peroneal muscles in the lateral calf to the foot. The