How long should you have fever after knee replacement?

Typically, a fever after knee replacement surgery should not last more than a few days. Generally, a low-grade fever (around 99-101°F or 37-38°C) within the first 24-48 hours after surgery is considered normal. However, if the fever persists for more than three days or reaches a higher temperature, it's important to consult your healthcare provider as it could be a sign of an infection or other complications.