Distraction osteogenesis is a surgical technique used to lengthen bones. It involves cutting a bone and gradually pulling the two ends apart using a device called a distraction device. As the bone is slowly separated, new bone tissue forms in the gap, allowing for increased length. This method is commonly used in orthopedic surgery to correct bone deformities or lengthen limbs. It can also be applied in dental procedures to enhance the jawbone for dental implants. The process typically requires careful planning and monitoring to ensure proper healing and alignment.