Repair the medial wall defect and specimen harvest at 24 weeks post-operatively. (A) 10 mm in diameter defect in the orbital medial wall. (B) The graft was implanted into the defect. (C) The BMSC-BM/β-TCP group shows bony union achieving around the entire defects. (D) Gross view of the specimen. (E) The BM/β-TCP group shows new bone formation do not extent to the middle of the grafts, where orbital soft tissue adhered. (F) The β-TCP group shows grafts are still visible as porous cylinder shapes, with a raised surface.