Long Term Outcomes of Osteochondral Allografts for Osteochondral Defects of the Knee

The purpose of this study is to evaluate the functional and clinical outcomes of patients receiving femoral condyle osteochondral allografts, to evaluate potential predisposing factors to failure of such grafts, and to compare the overall outcomes of the grafts to the current standard of care for smaller lesions, microfracture. Our hypothesis is that patients treated with these allografts will demonstrate significant functional improvement as measured by validated outcome scoring measures and their function will be at least equal to that of microfracture outcomes.