If you feel pain at the root of your thigh when you get up after sitting for a while, the first thing to do is to go to the hospital for an examination, which may be caused by joint injury or sciatica from various causes. It is recommended to take daily rest and avoid continued weight bearing on the painful limb. You can usually take appropriate calcium supplements by drinking more milk or eating foods that contain a lot of calcium. It is also recommended to stop smoking and drinking and to eat a healthy diet.