(This question is related with orthopedics. Thanks.)
A 5 years old boy is brought to the outpatient clinics oforthopaedics and traumatology department. The family complaintsthat the boy has a limping gait for a few weeks without a traumahistory. The child has also some constitutional symptoms like mildfever and easy fatigability. The pelvis x ray demonstrates alamellar type periosteal reaction on the left proximal femur. Whatis your differential diagnosis? Which key methods would beappropriate for a proper diagnosis? (max: 150 words)
