Cartilage thickness mismatches in patellar osteochondral allograft transplants affect local cartilage stresses.

ABSTRACT: Osteochondral allograft implantation is a form of cartilage transplant in which a cylindrical graft of cartilage and subchondral bone from a donor is implanted into a patient's prepared articular defect site. No standard exists for matching the cartilage thickness of the donor and recipient. The goal of this study was to use finite element (FE) analysis to identify the effect of cartilage thickness mismatches between donor and recipient cartilage on cartilage stresses in patellar transplants. Two types of FE models were used: patient-specific 3D models and simplified 2D models. 3D models highlighted which geometric features produced high-stress regions in the patellar cartilage and provided ranges for the parameter sweeps that were conducted with 2D models. 2D models revealed that larger t

SUBMITTER: Rosario R 

PROVIDER: S-EPMC10560315 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature