Acetabular surgery should refer to acetabular fracture surgery. When uneven bone density of femoral head is found after acetabular fracture surgery, further examination should be done to clarify the cause of the disease before treatment under the guidance of doctor. Acetabular fracture surgery found after uneven bone density of the femoral head, indicating that the femoral head there are lesions, then the patient should be further MRI examination, in order to understand the uneven bone density of the femoral head is due to necrosis of the femoral head, or the presence of femoral head tumorous lesions, if necessary, the patient can carry out a puncture biopsy, under the microscope for pathology screening. If the patient has undergone acetabular fracture surgery, which means that the patient has a history of acetabular pain, and the uneven bone mineral density of the femoral head appears in the X-ray examination, but the femoral head does not appear to be collapsed, then it generally suggests that there is a lesion of the femoral head, and the cause of femoral head lesion may be ischemic necrosis leading to bone infarction. It is recommended that when patients find uneven bone density in the femoral head, they should actively cooperate with the doctor to do further examination, and treat the cause of the disease after clarifying the cause of the disease.