Limb lengthening surgery is a medical procedure used to increase the length of bones in the human body. This procedure involves a specific mechanism to gradually elongate the limb. Which of the following accurately describes the principle behind limb lengthening surgery?
A) The procedure involves using a high-frequency electromagnetic field to stimulate bone growth.
B) The surgery involves the application of mechanical traction to the bone through an external frame, which gradually stretches the bone over time.
C) The technique uses chemical agents injected into the bone to dissolve and re-form the bone tissue, increasing its length.
D) The procedure uses a combination of laser technology and ultrasound to enhance bone regeneration and lengthening.