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Childhood Arthritis Affecting Joints (Juvenile Idiopathic Arthritis)
Juvenile idiopathic arthritis (JIA) is a group of chronic inflammatory joint diseases affecting children under 16 years, causing joint pain, swelling, stiffness (especially morning stiffness lasting more than 30 minutes), and potential long-term joint damage if untreated. Primary management is medical (with pediatric rheumatologist using medications like methotrexate, biologics) to control inflammation and prevent joint destruction. Orthopedic surgeons become involved when medical treatment alone cannot prevent complications: joint contractures (permanent stiffness) requiring soft tissue releases, leg length discrepancies from growth disturbances requiring guided growth surgery, and severe joint destruction in adolescents/young adults requiring joint replacements (hip, knee)—typically in 10-15% of JIA patients who have poorly controlled disease despite modern medications.
📖What is Childhood Arthritis Affecting Joints (Juvenile Idiopathic Arthritis)?
Juvenile idiopathic arthritis (JIA) is a group of chronic inflammatory joint diseases affecting children under 16 years, causing joint pain, swelling, stiffness (especially morning stiffness lasting more than 30 minutes), and potential long-term joint damage if untreated. Primary management is medical (with pediatric rheumatologist using medications like methotrexate, biologics) to control inflammation and prevent joint destruction. Orthopedic surgeons become involved when medical treatment alone cannot prevent complications: joint contractures (permanent stiffness) requiring soft tissue releases, leg length discrepancies from growth disturbances requiring guided growth surgery, and severe joint destruction in adolescents/young adults requiring joint replacements (hip, knee)—typically in 10-15% of JIA patients who have poorly controlled disease despite modern medications.
🔬What Causes It?
- Unknown cause (autoimmune condition—body's immune system attacks own joints)
- Genetic predisposition (runs in some families)
- Not caused by infection, injury, or diet (common misconceptions)
- Triggers unknown (may involve genetic + environmental factors)
⚠️Risk Factors
You may be at higher risk if:
- Female gender (2-3 times more common in girls overall, though varies by subtype)
- Age of onset typically 1-6 years or 8-12 years (varies by subtype)
- Family history of autoimmune diseases
- No modifiable risk factors (cannot prevent JIA)
🛡️Prevention
- ✓No known prevention (JIA is autoimmune—cannot be prevented)
- ✓Early diagnosis and aggressive treatment prevents joint damage
- ✓Regular physiotherapy prevents contractures
- ✓Ongoing monitoring with rheumatologist ensures disease control