Fluid accumulation in both hips is not necessarily femoral head necrosis. Fluid accumulation in both hips is usually caused by inflammation of the synovial membrane of the hip joint, which may be caused by traumatic injury, intra-articular injury, bone collapse, etc. When the condition is more serious, it may lead to necrosis of the femoral head. Its main manifestations are joint pain, swelling, hip flexion, lower limb slightly abduction, external rotation and other symptoms. On the other hand, necrosis of the femoral head is mainly caused by ischemia of the femoral head due to various reasons. Because of the different causes of the two, so the two hips have fluid accumulation is not necessarily the femoral head necrosis. If you have fluid in both hips, you should go to the hospital in time, do the relevant examination to clarify the cause of the disease, and then follow the doctor’s instructions for treatment, so as to avoid delaying the condition.