Operative procedure of lateral malleolus. (a) Malunion part of fibula was exposed. (b) Scar tissue was removed. (c) Partial united bone was recut with chisel, and distal and proximal bone fragments were separated completely. (d) Corticated part of bone was decorticated with 1.2 mm K-wire. (e) The bone fragments were reconstructed as close as possible to normal side under the fluoroscopic image; then bone gap was arisen as shown. (f) Autologous iliac cancellous bone was grafted into this gap and bone fragments were fixed with locking plate.