transient synovitis
A self-limiting inflammation of the hip joint in children, causing acute hip pain and limp, often following a viral upper respiratory infection.
Full Definition
Transient synovitis, also known as toxic synovitis, is the most common cause of acute hip pain in children aged 3-8 years. It typically presents as sudden onset of hip pain, limp, and limited range of motion, often following a recent viral upper respiratory infection. The condition is characterized by sterile inflammation of the synovium, and while the exact etiology is unknown, it is thought to be post-infectious or immune-mediated. Diagnosis is primarily clinical and by exclusion of more serious conditions such as septic arthritis, with hip ultrasound showing joint effusion. The condition is self-limiting, resolving within days to weeks with supportive care including rest and anti-inflammatory medications.
Usage
Usage note: Also called toxic synovitis, though 'transient' is preferred to avoid confusion with toxin-mediated conditions.
In Context
- "The child's transient synovitis was managed conservatively with rest and ibuprofen." — Pediatric orthopedics note
- "Hip ultrasound confirmed joint effusion consistent with transient synovitis rather than septic arthritis." — Emergency department assessment