Causes, incidence, and risk factors
Symptoms may include:
- Hip pain (on one side only)
- Thigh pain, in front and toward the middle of the thigh
- Knee pain
- Low-grade fever, less than 101° Fahrenheit
Aside from the hip discomfort, the child does not usually appear ill.
Signs and tests
Toxic synovitis is diagnosed when other, more serious conditions have been ruled out, such as:
- Septic hip
- Slipped capital femoral epiphysis
- Legg-Calve-Perthes disease
Tests used to diagnose toxic synovitis include:
Ultrasoundof the hip X-rayof the hip ESR
- C-reactive protein (CRP)
- Complete blood count (CBC)
Other tests that may be done to rule out other causes of hip pain:
Aspirationof fluid from the hip joint Bone scan
Treatment often includes limiting activity to make the child more comfortable. However, there is no danger with performing normal activities. The health care provider may prescribe nonsteroidal anti-inflammatory medications (NSAIDS) to reduce pain.
The hip pain goes away within 7 – 10 days.
Toxic synovitis goes away on its own. There are no expected long-term complications.
Calling your health care provider
Call for an appointment with your child’s health care provider if: