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Osteochondral Allograft Transplantation for Full-Thickness Chondral Defect Utilizing BioUni Technique
Michael P Campbell1, John Hayden Sonnier1, Kevin B Freedman1
1Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA.
Background:
There are several techniques to treat chondral defects. Osteochondral allograft transplantation is an excellent option, and for elongated lesions, there are 2 techniques-the Snowman technique and the BioUni technique.
Indications:
Osteochondral allograft transplantation is indicated for active individuals with isolated, symptomatic full-thickness chondral defects without concomitant ligamentous injury or malalignment.
Technique Description:
The lesion on the native condyle is sized. A plug is then harvested from the allograft using a cutting block and sagittal saw. The recipient site is then prepared with an overlapping reamer system with a cutting block. Graft is then implanted in a press-fit manner.
Results:
Osteochondral allograft transplantation leads to improved patient-reported outcomes. The literature has demonstrated survival rates between 70% and 80% at 10 years.
Discussion/Conclusion:
Osteochondral allograft transplantation is a restorative cartilage treatment that has good clinical outcomes. The BioUni system is a good option for irregular or elongated lesions.
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