Limb lengthening surgery, a medical procedure used to correct limb length discrepancies or for cosmetic height enhancement, has become a specialized field within orthopedic surgery. One of the most critical factors influencing the success and safety of this surgery is the patient’s age, primarily due to the presence and condition of the growth plates. Growth plates, also known as epiphyseal plates, play a pivotal role in bone development and influence how limb lengthening is approached in children, adolescents, and adults. Understanding the significance of growth plates can help patients and their families make informed decisions about the timing and feasibility of the surgery.