Risk factors for infection after spinal surgery

Area of Science:

• Orthopedic Surgery
• Infectious Disease Epidemiology

Background:

• Postoperative infection rates after spinal surgery vary significantly.
• Patient comorbidities and specific surgical factors influence infection risk.

Purpose of the Study:

• To identify preoperative and intraoperative risk factors for postoperative infection following spinal procedures.
• To characterize the nature and timing of these infections.

Main Methods:

• A retrospective case-control study analyzed 48 infected spinal procedures and 95 controls.
• Data on preoperative (e.g., smoking, diabetes, BMI) and intraoperative factors were collected.
• Patients were stratified into adult and pediatric subgroups.

Main Results:

• Infections predominantly occurred within 3 months post-surgery.
• Significant preoperative risk factors included age >60, smoking, diabetes, prior infection, high BMI, and alcohol abuse.
• Combined anterior/posterior, staged spinal fusions had the highest infection rates. Staphylococcus aureus was the most common pathogen.

Conclusions:

• Aggressive management is crucial for complex spinal procedures to prevent and treat infections.
• Optimizing preoperative patient condition and awareness of intraoperative parameters are key.
• Consideration should be given to extended prophylactic antibiotics for high-risk patients.