A 7-yr-old boy with abrupt onset of pain in the hip with hip held in the abduction. Hemogram is normal. ESR is raised. What is the next line of management-
Usually the treatment of a clinically suspected case of transient synovitis of hip is Bed rest, NSAIDS and observation.
USG guided aspiration is indicated for :-


Temperature > 99.5° F
ESR > 20 (Raised ESR)
Severe hip pain with ROM
Hospitalize and observe
Ambulatory observation
Intravenous antibiotics
USG guided aspiration of hip