http://www.patents.com/us-5879353.html
A 2.4 mm eyeloop drill is drilled into place to be used as a guide for a cannulated reamer which creates the femoral osseous tunnel. The eyeloop drill may be drilled completely through the femur and out the anterolateral aspect of the thigh and be used later to pass sutures attached to the graft to pull and guide the graft into place.

Ta ušica služi da se kroz nju provuku hirurški konci zakačeni za graft pomoću kojih se graft dovodi na mesto.
Evo i slike:
http://www.ebay.co.uk/itm/Stryker-Endoscopy-234-020-023-Femo...

Ovo je slično:
http://en.wikipedia.org/wiki/Kirschner_wire
Kirschner wires or K-wires or pins are sterilized, sharpened, smooth stainless steel pins. Introduced in 1909 by Martin Kirschner, the wires are now widely used in orthopaedics and other types of medical and veterinary surgery. They come in different sizes and are used to hold bone fragments together (pin fixation) or to provide an anchor for skeletal traction. The pins are often driven into the bone through the skin (percutaneous pin fixation) using a power or hand drill.

I ovde se spominje:
https://docs.google.com/viewer?a=v&q=cache:xWO-RWr6nLEJ:medl...
Nakon što se Kirschnerova žica s ušicom provukla kroz tunel na tibiji u tunel na femuru i kroz prednji kortikalis femura van, koštano-ligamentni presadak uvlačio se preko konca u unaprijed pripremljene tunele u kondol femura i tibije.
...
Kirschnerova žica (borer) od 2,5 mm uvodi se 1,5 do 2cm medijalno od toga mjesta pod kutom...