Combined anterior and posterior convex hemiepiphysiodesis. A, Periosteum of anterior vertebral bodies incised and peeled forward and backward. B, Trough created in lateral side of vertebral bodies. Autogenous rib graft placed in trough. C, Area to be fused exposed through standard, unilateral, subperiosteal exposure. Area is decorticated, and bone graft is applied. SEE TECHNIQUE 44.36.