Femoral head necrosis is a common and difficult to treat disease, the main symptoms of which are hip pain and restricted movement. Clinically, young patients with osteonecrosis of the femoral head often come to the clinic, mostly in the early stages of osteonecrosis of the femoral head. Due to the fear of the progression of the disease leading to the collapse of the femoral head, doctors will tell the patient to reduce the weight bearing of the joint, which means to walk with an abductor. This will cause great inconvenience to the patient’s life and social activities. Causes: The causes of femoral head necrosis are multifaceted: 1. hormonal factors; 2. alcohol factors; 3. injury factors, such as femoral neck fracture and hip dislocation; 4. other factors, such as acetabular dysplasia, high susceptibility of the population, and abnormal blood lipid composition, can lead to the occurrence of femoral head necrosis. Diagnosis The early symptoms of femoral head necrosis are pain in the hip joint and limitation of joint activities. The pain can be aggravated after walking or at night, and the earliest activity limitation is the limitation of internal rotation of the hip joint. These facilitate early identification of the patient and draw attention to it. The diagnosis of imaging is the most convincing. X-ray staging: clinically, it can be divided into four stages: stage I, with slightly osteoporotic bone; stage II, with normal femoral head shape, visible intra-capsule change area and osteosclerosis at the edge; stage III, with femoral head collapse, deformation, and non-rounded or flattened femoral head; stage IV, with joint space narrowing and osteophytes on the basis of stage III. CT and MRI examination as well as isotope scan can provide earlier and more accurate diagnostic basis. Treatment 1.Chinese medicine treatment: Based on the principle of dialectical treatment, Chinese medicine treatment is used as appropriate to invigorate blood circulation, resolve phlegm and dampness, tonify liver and kidney, and strengthen tendons and bones, etc. It can also be combined with Chinese medicine preparations, such as Danshen injection, to do intravenous infusion. 2.Western medical treatment: mainly include drilling decompression, interventional therapy, marrow core decompression plus artificial bone grafting, vascular grafting, bone grafting with vascular tips, femoral head or hip replacement, etc. Except for replacement, all other treatments require the patient to continue walking with an abutment to prevent further collapse of the femoral head. However, joint replacement is an unacceptable reality for young patients and patients with early stage femoral head necrosis. However, the inability to walk normally restricts their life, work and social activities, which is really unbearable! What can be done to eliminate the need for joint replacement while taking into account the patient’s requirements? Happily, the “minimally invasive tantalum rod implantation” has matured in recent years and has achieved clinical success! Minimally invasive tantalum rod implantation is a treatment method to avoid or delay the collapse of the femoral head by implanting tantalum rods into the osteonecrosis zone below the weight-bearing area of the femoral head from the lower lateral side of the femoral ridge, through the femoral neck, to replace or share the weight-bearing function of the femoral head, and to avoid or delay the collapse of the femoral head under normal walking conditions. It is a minimally invasive technique with little trauma and bleeding, requiring only an incision of about 2 cm on the lateral thigh, and the procedure can be completed in 40-60 minutes. The procedure is safe and reliable, with significant results and a short hospitalization period.