ACL Tears: Allograft

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Introduction

The anterior cruciate ligament (ACL) is one of four ligaments that are crucial to the stability of your knee. It is a strong fibrous tissue that connects the femur to the tibia. A tear of your ACL will cause your knee to become less stable and feel as though your knee is about to give out.

Incisions

Small incisions (portals) are made around the joint. The scope and surgical instruments will go into these incisions.

Visualization

The scope is inserted into the knee. Saline solution flows through a tube (cannula) and into the knee to expand the joint and to improve visualization. The image is sent to a video monitor where the surgeon can see inside the joint.

ACL Removal 

A surgical instrument is inserted into the joint and the torn ACL is removed.

Graft Preparation 

Allograft tissue has been previously harvested from a donor and is stored in a sterile condition. . Special tissue processing is used to clean and prepare the new ACL graft.  The new graft will consist of tendon with plugs of bone attached to each end. These plugs of bone will help anchor what will become your new ACL.

Graft Insertion 

Through a small incision below your kneecap, a guide wire is inserted through the tibia and femur to help accurately drill tunnels. A surgical drill is inserted over the guide wire and new tunnels in the femur and tibia are created for your new ACL Graft. The end of the graft is tied to a loop on the guide wire and the graft is pulled into place.

Securing the Graft

Screws or staples are used to secure the plugs of bone into the tunnels. Over time, the plugs of bone will incorporate into the surrounding bone.

End of Procedure

With the new ACL in position and secured, the surgical instruments are removed and the procedure is completed