Monday, April 18, 2011

Closer Look: Anterior Cruciate Ligament (ACL) Reconstruction

Never in my whole stay in the operating room have I assisted in an ACL Reconstruction and Mam G knows it. I'd rather scrubbed in shoulder or knee arthroscopy because at least there I know I already mastered it, but in ACL, God knows that I don't know what to do. So when Mam G assigned me in ACL reconstruction, I didn't know what to do, so I just prayed that Dr. M (one of the best ortho surgeon in our hospital) won't be mad at me and throw me the OR instruments that I will be passing to him. And to think I need to endure all three cases of ACL.

Anyways, it's a good thing that all of my senior co-staff helped me to understand the process of ACL reconstruction and with all three cases being assigned to me, now I'm proud to say I already knew how to do it. Here's the closer look of the surgery.

ANTERIOR CRUCIATE LIGAMENT (ACL) RECONSTRUCTION

Definition: Anterior cruciate ligament reconstruction (ACL reconstruction) is a surgical tissue graft replacement of the anterior cruciate ligament, located in the knee, to restore its function after anterior cruciate ligament injury. The torn ligament is removed from the knee before the graft is inserted through a hole created by a single hole punch. The surgery is performed arthroscopically.


Procedure:
This surgical technique uses three very small incisions that are about 1/4 of an inch in length to create "portals" into the knee. A fiber-optic light source illuminates the inside of the knee and a video camera feeds an image to a monitor so that the surgeon can see inside the knee. A sterile saline solution is continuously pumped through the knee via a cannula so that the operative field is always clear.

After the surgeon inspects the knee for damage to the cartilage or the menisci, the remnants of the torn ACL are removed with a high-speed shaver. This tool is a very specialized device that is used to remove torn ligaments or torn pieces of cartilage from the knee. The surface of the intercondylar notch where the ACL normally attaches to the femur is then prepared with a high-speed burr so that the proper location for the tunnel for femoral fixation can be seen clearly. 

Tunnels are then drilled through the bone in the femur and the tibia so that the graft can be placed in the center of the knee in the same position as the original ACL. A separate incision that is about 2 to 3 inches long also has to be made in order to harvest the graft from either the patellar tendon or the hamstring tendons. After the graft has been harvested, it is then prepared by placing several very strong surgical sutures through the graft that are used to fix it in place. Some surgeons will also braid the graft before passing it through the tunnels.

After the graft is passed through the tunnels, it is then tensioned and fixed in place. A variety of fixation techniques have been developed to anchor the graft to the bone. Different techniques are used for different types of grafts, and today, fixation failures, though possible, are very rare.

Once the graft has been fixed in place and any additional damage has been addressed, the incisions are closed and a sterile dressing is used to cover the knee. This dressing will usually stay on for several days while the wound begins to heal.

Instruments and Supplies:
  • Sharps
  • Tonsil/Adson Curve Clamp
  • Mixter
  • Mosquito Curve
  • blade 15/11
  • myerding retractor
  • ticron 2-0
  • vicryl 0
  • vicryl 2-0
  • vicryl 4-0
  • EB 6" # 2
  • Band-aid
  • Wadding sheet for pneumatic tourniquet
  • pneumatic tourniquet
  • camera (scope)
  • light source
  • water tubings
  • suction tubing
  • shaver
  • RF
  • arthroscopic hand instruments (grasper, straight biting, right biting, left biting punchers)
  • drill and hose
  • endobutton c/o company (as well as instruments for grafting)
Source: ACL SolutionsWikipediaPhysio4life

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