Showing posts with label ACL Hamstring Reconstruction Technique. Show all posts
Showing posts with label ACL Hamstring Reconstruction Technique. Show all posts

Saturday, May 29, 2010

ACL Reconstruction 26 May 2010


Picture:Tourniquet on upper thigh


I went in at 7am this morning.
Had the operation at 9:30am.

ACL Hamstring Reconstruction Technique

*Pre-operative antibiotics, +/- regional block
*Supine postion, all bony prominences well padded.
*Anesthesia (GETA / regional)
*Examination under anesthesia.
*Tourniquet placed high on thigh.
*Perform Knee Arthroscopy.
*Hamstring Harvest
*Sartorius, sartorius fascia=superficial and proximal
*Gracilis=rounder, palpable, proximal. Proximal attachment is circumferential, i.e. after harvest you should note muscle fibers coming off both sides of tendon. If only on one side you may have harvested semitendinosis.
*Semitendinosis-flat, larger, broader insertion, difficult to palpate. Muscle fibers only come off one side of tendon proximally.
*3-4cm incision 3 fingers breadths below medial joint line, midline tibial shaft between crests
*Dissection to sartorius fascia, incise fascia just above Gracilis.
*Isolate gracilis, free fascial slips and excise with tendon stripper.
*Right angle clamp to pull semitendinosis into view, isolate, free fascial slips and excise with tendon stripper
*Deeper structure surrounded by fat is saphenous vein and nerve
*Cut grafts to 24cm and prepare on back table with #2 Ethibond whip stitches in each end.
*Debride ACL stump
*Notchplasty
*Tibial tunnel;just lateral to medial tibial spine, 7mm anterior to PCL in posterior half of ACL footprint, along posterior edge of anterior horn of lateral meniscus. Tunnel angled @45 degrees drill/dilate to size
3-4mm offset femoral tunnel guide used to place guide wire in the 11o’clock position for right knee. 1 o’clock=left knee.
*Drill femoral tunnel to 35mm with acorn reamer. Offset <5mm.
Drill endobutton tunnel with endobutton drill. Measure femoral tunnel length.
*Endobutton size = femoral tunnel length – 25mm. Usually 25-45mm. (see Endobutton Technique for full instructions)
*Place a line on the graft 6mm distal to the femoral tunnel length to indicate the point at which the graft is seated deep enough to flip the endobutton.
*Intrafix tibial fastener: make sutures 5” form tibial tunnel and knot corresponding limbs together. Loop sutures over Tie Tensioner. Cylce knee with 30 lbs of tension. *Compress tendons with sheath trial. Insert sheath with derotation lab in 12 o’clock position. Insert screw
*Consider spiked washer and screw tibial fixation augmentation.
*Irrigate.
*SQ closed 2-0 vicryl inverted interrupted
*Skin closed 3-0 monocyl running SQ
*Steri-strips, mastasol, portal sites closed with steri-strips
*Zeroform, 4x4’s, ABD’s, sterile-webril, Ace bandage, cryo-cuff, knee immobilizer locked at 15 degrees.



Picture above: Stripping of gracilis, with firm countertraction to deliver the tendon out of the incision





Picture: The two tendons have been stripped, and will subsequently be detached from their distal insertions.




Picture: The tendons have been sutured together



Orthopedic Surgeon Dr Mark Human.
Recovery afrter anesthetic = good
Femoral Nerve block dont to left leg.
feeling returning from the evening after 8pm.
Omnopon administered for pain via intravenous injection.
Knee Brace locked on 0 Degrees at night.
I sleep on my back.