Fig 6.

(A) With the patient supine and left knee slightly flexed, the defect is filled with BMAC-soaked bone graft to a level flush with the subchondral bone (arrow). (B) The base of the defect is filled with Tisseel fibrin glue. (C) The scaffold is placed flush into the lesion with the cell side down. It is helpful to insert the scaffold with it still attached to the foil template (arrow), to allow for stable insertion in the proper orientation. (D) After removing the template and holding light digital pressure on the graft for 3 minutes, the fibrin glue has solidified and the graft (arrow) is now secured. (BMAC, bone marrow aspirate concentrate.)