Final answer:
The two most common operations necessary in sickle cell patients are blood transfusion and bone marrow transplantation.
Step-by-step explanation:
The two most common operations necessary in sickle cell patients are blood transfusion and bone marrow transplantation. Blood transfusion is used to provide healthy red blood cells to the patient, which can help improve oxygen delivery and relieve symptoms such as anemia and pain. This procedure is done periodically to maintain adequate red blood cell counts.
Bone marrow transplantation, also known as hematopoietic stem cell transplantation, is a treatment option for severe cases of sickle cell disease. It involves replacing the patient's unhealthy bone marrow cells with healthy donor cells, which can produce normal red blood cells. This procedure can potentially offer a cure for sickle cell disease, but it is associated with risks and complications.