You can get necrosis of the femoral head at age 14. Necrosis of the femoral head is a common hip joint disease, which is the interruption or damage of the blood supply to the femoral head, leading to the death of bone cells, bone marrow components, structural changes of the femoral head, collapse, and joint dysfunction. Teenagers aged 14 years old have high activity, trauma, taking glucocorticoids and other triggers are the main factors leading to femoral head necrosis. In the early and middle stages, ibuprofen and alendronate are used for treatment under the guidance of doctors. However, femoral head necrosis progresses faster, and non-surgical treatments are not effective, and in the middle and late stages, surgical treatments such as hip-preserving surgery and artificial joint replacement may be needed. 1. Early and middle stage treatment: In the early stage, there may be mild pain under the stimulation of external pressure. In the middle stage, there is pain in the affected area even when resting and not stimulated by external force, and some of them have slight collapse of the femoral head. Under doctor’s instruction, ibuprofen or alendronate can be taken to slow down the necrosis of the femoral head. 2. Intermediate and advanced treatment: Surgery can be used in intermediate and advanced stages when the condition is more serious, and the surgical plan should be personalized according to the actual disease. Surgical methods include core decompression, bone grafting with vascularized flap, osteotomy and arthroplasty. 3. General treatment: pay attention to rest, light, low-fat, low-cholesterol diet. Abstain from smoking and alcohol, and have regular checkups. Patients are reminded that if there is necrosis of the femoral head, it is recommended to go to the hospital in time and follow the doctor’s instructions for treatment.