Many factors have been indicated and proved to have effects on SSI; among these factors, malnutrition has stood out, and a broad array of serological laboratory values, such as a serum albumin <3.5 mg/dL, have presented a significantly increased risk of infection in spine metastases [9], spine fusion [4], joint arthroplasty [10] and hip fracture [5, 11]. Here, ALB is linked to malnutrition.