Cancer spreading to the bone is known as bone metastases. According to Know Breast Cancer, studies suggest that the average 1-year survival rate for people with metastatic bone cancer is 49-59%. However, 28% of people with distant breast cancer may live another 5 years. People with bone metastases must take care of because they are at high risk of developing serious bone complications. Treatment cannot cure these conditions- but it can help ease pain, strengthen bones, and slow progression.