Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Familial avascular necrosis of the femoral head ?
    ### Response:
    What are the signs and symptoms of Familial avascular necrosis of the femoral head? The Human Phenotype Ontology provides the following list of signs and symptoms for Familial avascular necrosis of the femoral head. If the information is available, the table below includes how often the symptom is seen in people with this condition.
    