The early symptoms of femoral head necrosis are: pain in the lateral hip or groin or lumbar area, pulling pain in the knee joint area, coldness, weakness, soreness and numbness in the lower limbs; soreness and sleepiness in the hip joint, sometimes with intermittent pain. These symptoms do not necessarily appear at the same time, but may only show one or two symptoms, which may persist or disappear in a short period of time. Here are some simple ways to help you diagnose whether you are suffering from osteonecrosis of the femur. 1.Hip pain radiates to the groin area or to the posterior, lateral or medial side of the hip or knee. 2.Hip joint stiffness, weakness, restricted movement, inflexible leg lifting, early symptoms of cross-legged or outward skimming legs and squatting difficulties. 3, limp: that is, the affected limb does not dare to put weight on it when walking, like walking on tiptoe. 4.After the healing of fracture, dislocation or hip sprain, intermittent or persistent pain in the hip will appear gradually or suddenly. It is aggravated after walking activities, sometimes it is resting pain, and the pain is mostly pins and needles-like or sore, and the above reaction occurs. 5, long-term or short-term heavy use of hormones or frequent alcoholics appear hip pain, mostly hidden pain, dull pain, often located in the groin, obvious when moving, alleviated after rest. 6, cold and damp: when the weather is cold, the hip joint is sore and sleepy, the pain is aggravated, and the function is limited. 7, inflammation: when you have a cold and fever, blood sedimentation is accelerated, white blood cells are elevated, and the pain of the affected hip joint is aggravated.