The reason for the formation of bone cysts is still unclear, which may be related to trauma, venous obstruction, embryonic developmental abnormality and so on.
1. Trauma: due to trauma, the local bone tissue bleeds, and the hematoma fails to be absorbed and gradually forms bone cysts.
2. Venous obstruction: the bone marrow cavity produces blood stagnation due to the obstacle of venous reflux, with the increase of pressure in the cavity leading to the continuous retention of blood, and then bone cysts are formed in the later stage after bone resorption.
3. Abnormal embryonic development: when synovial cells with secretion function are retained in the bone marrow cavity during the embryonic development period, the secretion of synovial fluid is gradually stimulated and bone cysts can be formed by aggregation here.
Bone cysts may also have other causes, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.