For Kyphoplasty and Vertebroplasty procedures, it is generally recommended to intervene on a maximum of three vertebral fractures (levels) in a single session. This recommendation is primarily due to the potential risks associated with the bone cement used in both procedures. While rare, chemical reactions to the cement can occur. As the number of treated fractures increases, so does the volume of cement, which can elevate the risk of allergic reactions. Therefore, treating a large number of fractures in one session is generally not advised. Furthermore, increasing the number of treated fractures can significantly extend the procedure duration.