[Limb reconstruction: connotation, extension, and its core value in modern medicine].

Limb reconstruction has emerged as a unique and increasingly important discipline in modern medicine. Limb reconstruction refers to the systematic restoration of complex pathological conditions resulting from various injuries or diseases-such as tissue defects, infections, and deformities-using a combination of surgical and non-surgical approaches. Its technical framework is primarily based on microsurgery, the Ilizarov technique, cement-induced membrane technique (Masquelet technique), engineered tissue regeneration, soft tissue balancing and dynamic reconstruction, and modern prosthetics, supplemented by other surgical modalities including internal and external fixation, joint replacement, sports medicine, and wound management. Limb reconstruction surgery employs these techniques to systematically restore the structure, morphology, and function of the limb, representing a critical component of modern surgery. This discipline overcomes the fragmentation inherent in traditional subspecialty care, providing a definitive clinical pathway for limb reconstruction and serving as the last beacon of hope for salvaging damaged limbs.