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Hemihyperplasia, also known as hemihypertrophy or overgrowth syndrome, is when one side of the body grows faster than the other side as a result of bone or soft tissue that doesn’t stop growing. It can look different for everyone affected, and it’s common in children.

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  • American Academy of Orthopaedic Surgeons
  • Pediatric Orthopaedic Society of North America
  • Ruth Jackson Orthopaedic Society
  • The Limb Lengthening and Reconstruction Society
  • American Orthopaedic Association