Can you tell me what is gaucher disease?

There isn't enough - Space here to explain it. Briefly its one of the hemapoietic disorders, due to deficiency of a specific enzyme. Seen in kids with bone pain deformities due to bones not forming normally; bleeding can occur into joints, under the skin, liver/spleen can become rather large and due to all this kids have anemia. Can affect the hips. Treatment depends on their symptoms ; enzyme replacement therapy.