The free vascularised corticoperiosteal flap from the medial femoral condyle, as described by Doi and Sakai, can be used for difficult non-unions. This flap is supplied by the Descending Genicular Artery (DGA) and the Superomedial Genicular Artery (SMA).
In this anatomical study we described the anatomy of these series. The DGA was dominant in 24 of 34 cases (70%). If the DGA was absent or too small, the SMA was sufficiently large for an adequate supply of the graft area. We concluded that of all the dissected specimens the arteries were sufficiently large and long enough to be suited for microvascular anastomosis.