Adverse post-operative complications
infection, fracture, non-healing
INFECTION, SUBCUTANEOUS EMPHYSEMA
We conducted post-operative follow-up to detect infection and non-healing of the incision. We evaluated serum magnesium ion level according to liver and kidney function, detect the deep veins of both lower limbs by ultrasound, detect subcutaneous emphysema and fracture of the magnesium screw by X-ray and CT.