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Toxic synovitis of the hip in children
1Eastern Kentucky University, Richmond, USA.
Insights
Toxic synovitis is a common cause of hip pain and limping in young children. Diagnosis often involves ultrasound, and treatment typically includes rest and anti-inflammatory medication.
Area of Science:
- Pediatric Orthopedics
- Pediatric Rheumatology
Background:
- Toxic synovitis is the most frequent cause of acute hip pain and limping in children under 10.
- This condition typically affects one hip, presenting with joint effusion.
Purpose of the Study:
- To outline the diagnostic and treatment approaches for toxic synovitis in children.
- To highlight key differential diagnoses and follow-up protocols.
Main Methods:
- Ultrasound is the primary imaging modality for diagnosis and management.
- Clinical presentation includes hip, thigh, and knee pain, with potential for mild elevation in inflammatory markers and temperature.
Main Results:
- Ultrasound is recommended for diagnosis and treatment guidance.
- Differential diagnoses include septic arthritis, Perthes disease, and osteomyelitis.
- Most cases resolve with conservative management: rest and NSAIDs.
Conclusions:
- Toxic synovitis is a common, usually self-limiting condition in children.
- Prompt diagnosis via ultrasound and appropriate management are crucial.
- Regular follow-up is necessary to monitor for recurrence or complications like avascular necrosis.
Abstract:
Toxic synovitis, an acute inflammatory condition of the hip, is the most common cause of limp and acute pain of the hip in children under 10 years of age. Usually, the synovitis and joint effusion are present unilaterally. The etiology of the condition is unknown, although in a few cases a recent history of an upper respiratory tract infection may be present. The child with toxic synovitis may complain of a limp and pain in the hip, the anteromedial aspect of the thigh, and the knee. The white cell count and erythrocyte sedimentation rate may be slightly elevated, as is the body temperature. Ultrasound is recommended as the primary imaging tool in the diagnosis and treatment of toxic synovitis. Septic arthritis, Perthes disease, and osteomyelitis are a few of the differential diagnoses that the practitioner should consider. Most cases can be managed with bed rest at home and administration of a nonsteroidal anti-inflammatory medication. Follow-up care should occur 2 weeks after diagnosis to ensure there is no recurrence of the joint effusion or progression to avascular necrosis. Radiographs of the hip should be repeated at 1 month and 3 months to complete the patient follow-up.