Taiwan Hospital Corrects 16cm Leg Length Discrepancy in Teenager

A 15-year-old boy, referred to as 'Xiao Long,' has regained his confidence and normal gait after undergoing extensive treatment for a significant leg length difference. Due to developmental issues causing premature closure of his growth plate in his tibia, Xiao Long developed a leg length discrepancy that worsened over time, impacting his mobility and causing him distress during his formative years.

Four years ago, his family sought help at Chiayi Christian Hospital. Orthopedic surgeon Yao Shu-hsin evaluated the case and opted for a bone lengthening procedure using a circular external fixator. This method involves precisely fixing the bone and gradually extending it by minuscule amounts daily, allowing new bone, blood vessels, muscles, and nerves to grow in sync. The initial surgery successfully lengthened his leg by 8 centimeters.

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The bone can only be lengthened by a certain amount; bone lengthening is like creating new growth space for the bone. Adjustments are less than a millimeter per day, and the body will gradually generate new bone tissue. Exceeding the limit may affect nerve and blood vessel growth. The treatment process requires cooperation from the patient, family, and medical team, along with rehabilitation therapy, to achieve the best results.

However, due to rapid adolescent growth, the length difference reappeared. This year, Xiao Long underwent a second surgery. In total, the two procedures corrected approximately 16 centimeters, rebalancing his legs. The treatment required close collaboration between the medical team, the patient, and his family, along with diligent rehabilitation.

Orthopedic surgeon Chen Chun-ho explained that bone lengthening has limits, and the daily adjustments are less than a millimeter to avoid compromising nerve and blood vessel growth. He stressed the importance of early intervention for leg length discrepancies, which can stem from various congenital or acquired conditions. Left untreated, significant differences can lead to pelvic tilt, scoliosis, uneven joint stress, chronic pain, and degenerative joint disease. Parents are advised to seek professional orthopedic evaluation if they notice limping, uneven shoulder heights, or noticeable leg length differences in their children.

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The leg length difference in children and adolescents can stem from congenital bone development abnormalities, trauma, growth plate damage, infection, or tumors. The greater the difference, the more likely it is to cause pelvic tilt, scoliosis, uneven stress on the knee and hip joints, and eventually chronic pain, joint degeneration, and abnormal gait. Many parents mistakenly believe their child's uneven walking or shoulder height is just poor posture and delay medical attention. If you notice your child frequently limps, has unusually severe wear on one shoe sole, has a tilted pelvis when standing, or a noticeable difference in leg length, seek a specialist orthopedic evaluation as soon as possible. Early intervention offers a chance to reduce future joint degeneration and spinal deformities, lessening the impact on life and psychology.