Fig 12.

Finalizing the C-shaped tibial tunnel. To finalize the C-shaped tunnel, a C-shaped dilator needs to be inserted. The extra-articular preparation with 2 blunt guidewires for the anterior and posterior drill holes is shown in (C). The 2 wires are then inserted in these holes and the dilator oriented with its concavity looking laterally (G, schematic drawing; A, arthroscopic view from a lateral standard portal). By tapping the back of the handle the dilator is inserted into the tibia (F, intraoperative view of a left knee from anterior) until seen intra-articularly (B, arthroscopic view of the dilator with from a lateral standard portal). To do no harm with the guidewires, they glide back into the dilator while insertion as can be seen in (B). (D-E) The final C-shaped tunnel arthroscopically (D) and looking up into the tunnel from outside (E).