What BMI threshold increases arthroplasty infection risk?

BMI >40 increases deep SSI risk 3-4x after TKA/THA. Many centers require BMI <40 for elective arthroplasty. BMI reduction from 45 to 39 requires sustained weight loss effort but meaningfully reduces surgical risk, readmission, and complications.

What preoperative optimization reduces SSI risk?

HbA1c <8% (ideally <7%) reduces postoperative infection risk. Tobacco cessation 4-6 weeks preoperatively reduces wound complications by 50-70%. MRSA screening and decolonization (mupirocin + chlorhexidine) reduces SSI by 40-60% in colonized patients.

What albumin level indicates surgical nutrition risk?

Serum albumin <3.5 g/dL = hypoalbuminemia associated with 2-3x increased SSI risk, wound dehiscence, and prolonged hospital stay. Nutritional optimization with protein supplementation (1.2-1.5 g/kg/day) and correction of vitamin deficiencies recommended before elective surgery.

Orthopedic Surgical Site Infection Risk Score

Calculate orthopedic surgical site infection (SSI) risk from patient factors: BMI, diabetes, tobacco use, immunosuppression, malnutrition, prior SSI, and procedure type. Identifies candidates for preoperative optimization before elective arthroplasty.

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PJI Diagnosis Criteria

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Orthopedic Surgical Site Infection Risk Score

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Frequently Asked Questions

What BMI threshold increases arthroplasty infection risk?

What preoperative optimization reduces SSI risk?

What albumin level indicates surgical nutrition risk?