Understanding Septic Arthritis
Septic arthritis occurs when bacteria enter a joint, causing sudden, severe inflammation.
It can follow fever, infection, or minor injury and most commonly affects the knee or hip.
Key Symptoms
- Severe joint pain and inability to move the limb
- Swollen, hot, and red joint
- High fever and chills
- Child refuses to walk or bear weight
- General unwellness
Red Flags
- Sudden joint swelling with fever
- Child crying when joint is moved
- Recent infection (ear, throat, skin)
- Delayed medical care can lead to permanent joint damage
Diagnosis
- Blood tests: Elevated white cells and inflammatory markers
- Joint aspiration: To confirm infection and identify bacteria
- Imaging: X-ray or ultrasound to assess joint space
Treatment
Emergency Hospital Care
- IV antibiotics immediately
- Surgical drainage if pus is present
- Rest and physical therapy after infection clears
Hope Arthritis Foundation’s Mission
We raise awareness that not all swollen joints mean arthritis—some mean infection.
Quick recognition and referral can save a child’s joint and life.
Written by:
Dr. Angela Migowa, MD, PhD
Pediatric Rheumatologist & Founder, Hope Arthritis Foundation