Transient synovitis: is there a need to aspirate hip joint effusions?

Area of Science:

• Pediatric Orthopedics
• Musculoskeletal Imaging
• Pediatric Rheumatology

Background:

• Management of pediatric hip effusions, particularly the need for aspiration, remains debated.
• Transient synovitis (TS) is a common cause of hip pain and effusion in children.
• Ultrasound is frequently used to diagnose hip joint effusions in pediatric patients.

Purpose of the Study:

• To evaluate the necessity of hip joint effusion aspiration in children diagnosed with transient synovitis.
• To determine the natural history and resolution patterns of hip joint effusions in pediatric TS patients.
• To assess the safety and efficacy of conservative management for these effusions.

Main Methods:

• Prospective follow-up of 25 children with ultrasound-confirmed hip joint effusions.
• Sequential clinical and radiological examinations were performed until symptom resolution.
• No patients underwent hip aspiration; conservative management was uniformly applied.

Main Results:

• No cases of missed sepsis were identified in the study cohort.
• At 7 days, 60% of patients exhibited normal clinical exams and no detectable effusion on ultrasound.
• At 14 days, 16% still had detectable effusions, but all were asymptomatic with decreasing effusion size.

Conclusions:

• Hip joint effusions in pediatric transient synovitis typically follow a benign course.
• Conservative management is effective, and routine aspiration is not necessary.
• Ultrasound monitoring can track effusion resolution in children with TS.