What should you know about knee osteomyelitis?

The infection may reach bone through the bloodstream, nearby tissue, or an opening after injury or surgery. Pain may be deep and persistent, with reduced movement or difficulty using the leg. Fever may occur, but its absence does not exclude infection. A clinician may use examination, blood tests, and imaging to assess the bone and surrounding tissues.

Contact a medical service promptly if osteomyelitis is suspected rather than treating it as a simple muscle strain. Treatment is directed by the infection’s location, severity, and likely organism, and can involve antimicrobial medicine and management of affected tissue. Do not start leftover antibiotics, because this can complicate later testing. Keep any wound clean and follow instructions about weight-bearing.

Seek urgent assessment for a hot swollen knee with fever, rapidly increasing pain, pus or drainage, confusion, marked weakness, or inability to use the leg. People with diabetes, reduced immunity, recent surgery, or an open wound should seek advice promptly when new knee pain and fever appear.

Ask which tests are needed, where the infection is located, and how long treatment may be reviewed. Discuss wound care, safe weight-bearing, warning signs, and whether procedures such as bone grafting could ever be relevant after infection management.