CHOP Researchers Develop Custom Cartilage Grafts for Infant Airway Surgery

The standard approach for enlarging pediatric airways involves harvesting costal cartilage from the rib cage. This process frequently leaves surgeons with insufficient material, forcing them to postpone life-saving operations and keep patients on tracheostomy tubes for extended periods. The new technique, detailed in Nature Communications, replaces this limited source with a scaffold derived from meniscal cartilage. By removing cellular components that trigger immune responses, researchers created a structure that accepts ear-derived progenitor cells, which then mature into functional tissue.

Led by Riccardo Gottardi and Ian Jacobs, the team achieved successful implantation in preclinical models within four weeks—a significant improvement over the six-month timeline previously required for engineered cartilage. This speed is critical for clinical viability, as surgeons often have a narrow window to intervene before the condition worsens. Beyond addressing subglottic stenosis, the researchers anticipate that this bioengineering breakthrough could eventually treat a broader range of pediatric conditions requiring structural cartilage grafts, potentially reducing the reliance on invasive autografts.