Limb reconstruction is a specialized surgical field and academic concept focused on the complex management of limb pathologies, including severe trauma, infection, and congenital deformities, with the primary goal of preserving and restoring functional extremities as an alternative to amputation. This multidisciplinary area investigates and applies advanced surgical techniques and modalities, such as bone grafting, external fixation, and internal fixation, to replace missing tissue, correct deformities, and facilitate bone healing and lengthening, thereby significantly impacting patient mobility and quality of life.