I have an old injury on my left leg which was operated upon when i was 10 years old. same leg cramps up at times in the night. what should i do?

Leg cramps need care: Too little information to determine if there is a connection with old injury, but the good news is that leg cramps can be treated. Common causes are lack of hydration, low iron, calcium, potassium, or overuse due to gait abnormality. Ge to your doctor for a check up and be sure to tell about the priorminjury so this can be checked. Periodic limb movement can look, like this as well.