喉外伤、喉肿瘤、喉狭窄的手术可导致声门下组织缺损。环状软骨被认为系喉的基石，然而从经验可知去除环状软骨，造成一半以上的缺损也可不影响功能，而声门下区粘膜的缺损却必须立即进行修复。继往应用皮肤移植物修复喉粘膜缺损，其效果不尽人意。该作者应用非血管化游离... Throat trauma, laryngeal neoplasms, laryngeal stenosis surgery can lead to subglottic tissue defects. Cyclic cartilage is considered the cornerstone of the throat, however, it has been empirically known that the removal of the annular cartilage results in more than half of the defects being unaffected, whereas the subglottic mucosa defects must be repaired immediately. The past application of skin graft repair of laryngeal mucosal defects, the effect is not satisfactory. The author applies non-vascularized free ...