Background: The generally accepted expiration time of Fresh OCA's is 28 days in storage, a limited window from 14 to 28 days remains for implantation. Yet, the rates of graft survival and thus optimal time for transplantation within this window remain largely unknown.
Conclusion: OCA transplantation is a safe and successful treatment option for large osteochondral defects of the knee, with excellent rates of in situ graft survival at 5 years. Prioritizing early transplantation of OCAs to <25 days in storage improves rates of graft survival.
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Gergo Merkely, MD*, Jakob Ackermann, MD, Evan M. Farina, MD, Courtney VanArsdale, PA, Christian Lattermann, MD, Andreas H. Gomoll, MD. "Shorter Storage Time Is Strongly Associated With Improved Graft Survivorship at 5 Years After Osteochondral Allograft Transplantation". AJSM. September 17, 2020.