Fig 11.

Preparation of the C-shaped tibial tunnel. To get the C-shaped tunnel additionally to the first guidewire, two 4.5-mm drill holes on each side of the guidewire need to be placed through the guide (E, intraoperative view of a left knee viewed from anteriorly; F, schematic drawing). (A) The guide and the first wire still in place and the first drill bit already inserted anteriorly. (E) The anterior drill bit should be the short one and the posterior the long one to facilitate instrument handling. (B) The corresponding arthroscopic view with the second drill bit in place is shown from a lateral standard portal. (C) The next step, where the tibial guide and the drill bits are removed and the guidewire is over reamed with a cannulated 4.5-mm drill bit viewed from a lateral standard portal. (D) The final 3 drill holes on the tibial metaphysis are shown.