Histological and Biomechanical Considerations of Donor Costal Cartilage Allografts for Total Ear Reconstruction
- Journal
- The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association (Q1)
- Published
- 9 October 2026
- Study design
- Unclassified
- Evidence level
- Level 5, Expert Opinion (CEBM 5)
- Authors
- Arya A Sherafat, Lilian Doan, Ashton Rosenbloom, Ryan P Donahue, Shingirirai Michael Chaokma, Kyriacos A Athanasiou, et al.
- PMID
- 42852954
- DOI
- 10.1177/10556656261496018
Why clinicians should know about it
- Picked for Histology (top studies of the week, 11 October 2026): Histologic and biomechanical analysis of donor costal cartilage allografts
Abstract
ObjectiveDonor costal cartilage (DCC) allografts for microtia reconstruction have shown promising clinical results, but characterization of the allografts' intrinsic properties has yet to be performed.DesignHistologically, DCC allografts were compared to autologous costal cartilage (ACC). Biomechanical properties of eight DCC were compared with normative literature values.SettingUniversity laboratory.Patients, ParticipantsAdolescent and teenage patients undergoing microtia/anotia reconstruction.Main Outcome MeasuresHistological comparisons between DCC and ACC were performed using Safranin O, Alcian Blue, Masson's Trichrome, and Collagen II-specific staining. Biomechanical evaluation of DCC yielded Young's modulus, ultimate tensile strength, and ultimate compressive strength.ResultsHistologic analysis demonstrated preservation of most collagen content, with a notable reduction in the glycosaminoglycan content of the extracellular matrix in DCC. DCC demonstrated biomechanical performance that overlaps with ACC based on reported literature values.ConclusionsThe histologic integrity and biomechanical characteristics reveal DCC may have structural integrity that resembles ACC.
Abstract as published, via PubMed.
For healthcare professionals. The summary is generated by AI from the published abstract, and the evidence level is assigned automatically from the study design on the Oxford CEBM hierarchy. Neither is medical advice. Read the full paper before changing practice.