The majority of steel nails and plates used for fractures are currently made of titanium alloy, some are made of stainless steel, and a few screws are made of absorbable biomaterials. Titanium alloy material is the mainstream of steel nails, it is an inert metal, biocompatible and less prone to fracture, and its modulus of elasticity is also better than that of stainless steel. After surgery, if the screws are not near the joint can not be taken, there is no great impact on the human body, some patients if the nail is close to the joint or restricted joint activities, such as the occurrence of the outer ankle nail, because the skin is thin, the patient often feel the skin abrasion with discomfort, you can perform steel nail removal surgery.