Osteochondral allograft

A plug of cartilage and bone is harvested from the donor bone block, and press-fitted into the prepared recipient area.

Viability of allograft plugs

This technique is usually reserved for large cartilage defects, where the cartilage damage is full thickness. Fresh allograft is purchased from a tissue bank as a block of bone and cartilage, from which the surgeon harvests the plug. The success of the procedure depends upon the viability of the fresh cells, which can only be stored for a month or two after any necessary processing.