Presentation
Non-traumatic origin of bilateral hip pain - 3 days. Pain more on left side than right.
Patient Data
Age: 9 years
Gender: Female
From the case:
Hip joint effusion (ultrasound)
Frontal

There is mild left sided pelvic tilt.
There is bulging glueteal fat pad involving both hip joints.
From the case:
Hip joint effusion (ultrasound)

There is presence of effusion involving both hip joints. There is no erosion of visualized femural head - neck cortex on either side. No periarticular abscess / collection / bursitis.
Case Discussion
Findings favor bilateral hip joint effusion.