An experimental model for ear reconstruction with moulded perichondrial flaps: a preliminary report

Attempts to create a pinna by moulding cartilage fragments have been reported previously by Peer. The regenerative capabilities of perichondrium are well known. Combining these concepts, we succeeded in creating a cartilage pinna by implanting perichondrial flaps between the leaves of a methylmethacrylate mould. Ten rabbits were divided into two groups, the first using vascularised perichondrial flaps and the other using free perichondrium into which an arterial and venous pedicle was implanted. Both of these preparations were placed in the moulds in a subcutaneous pocket. Six weeks later, these constructions were harvested and histological examination conducted. Active cartilage growth was noted in both groups. The construction was completed by coverage with a split thickness skin graft. Clinically, this new procedure may provide a means of pinna reconstruction with a thin flexible cartilage framework, with excellent relief.