There is an irregular, well-corticated bony fragment located at the posteromedial corner of the talar dome. It appears to be detached from the donor bone but still lying within the defect. The appearance is consistent with osteochondral defect (osteochondritis dissecans).
Additionally, there is an os trigonum, os calcaneus secundarius, and moderate degenerative osteophyte proliferation at the dorsal aspect of the talonavicular joint.