Increased bone density after a fracture means more minerals in the bones, new bone growing out of the broken end, compression fractures, and bone diseases. 1. Increased minerals in the bones: If you take calcium supplements and vitamin D3 after a fracture, or if you regularly eat foods with high calcium content, the minerals in your bones will increase, which will result in higher bone density. 2. New bone grows out of the broken end: after a fracture, the broken end produces a new bone scab, and these newly grown bone tissues will also increase the bone density. 3. Compression fracture: If the fracture is a compression fracture, it can increase the amount of bone per unit volume and cause the bone density to increase. 4. Skeletal diseases: benign tumors of the bone and other skeletal diseases can also cause an increase in bone density. Increased bone density after a fracture may also be caused by other reasons, you should bring the test results to the doctor for follow-up.