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Suspensory Fixation Device for Use With Bone–Patellar Tendon–Bone Grafts
Philippe Colombet, M.D., Nicolas Bouguennec, M.D. Arthroscopy Techniques Volume 6, Issue 3, Pages e833-e838 (June 2017) DOI: /j.eats Copyright © 2017 Arthroscopy Association of North America Terms and Conditions
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Fig 1 Position of holes in bone plugs: aspect of graft bone block with 2 different passages of loop. One should note that the first hole is drilled at the bone and tendon limit to respect a minimum distance of 1 cm between the 2 holes and to place the braid on strong cortical bone, reducing the risk of bone block breakage. The minimum bone block length must be 1.5 cm. Arthroscopy Techniques 2017 6, e833-e838DOI: ( /j.eats ) Copyright © 2017 Arthroscopy Association of North America Terms and Conditions
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Fig 2 Preparation of graft on GraftTech table. The button is locked on the fixed end of the GraftTech device, by use of the flip threads (green and white or blue) or directly with a clamp. The bone block is secured on the mobile end of the GraftTech device; it is inserted between the 2 hooks to facilitate the insertion of the Pullup braids. We can see the temporary black loop emerging from the braid, well exposed with this setting. A Polysorb No. 1 suture (reference 1CL-936 GS 12; Syneture) is used as a suture relay to insert the braid through the bone block. Arthroscopy Techniques 2017 6, e833-e838DOI: ( /j.eats ) Copyright © 2017 Arthroscopy Association of North America Terms and Conditions
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Fig 3 Different steps of graft-Pullup setting. (A) The Pullup device is placed on the fixed end of the GraftTech device as described in Figure 2, and the bone plug is inserted in the movable end. (B) A needle suture loop is inserted through the bone block in the 1.5-mm bone hole. (C) The white Pullup braid is passed into the suture loop and pulled through the bone block. (D) The white Pullup braid is passed through the opposite black loop. (E) The scrub nurse pulls the black loop, while the surgeon gently tightens the opposite white braid. (F) The Pullup braid is inserted within the opposite braid, and the Pullup loop thus formed can be reduced to the appropriate length. This process is repeated with the second loop. BTB, bone–patellar tendon–bone. Arthroscopy Techniques 2017 6, e833-e838DOI: ( /j.eats ) Copyright © 2017 Arthroscopy Association of North America Terms and Conditions
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Fig 4 Final aspect of graft with femoral bone block on left. The plug is harvested from the patella. The bone block is cone shaped to facilitate its introduction into the femoral tunnel. For this reason, the distal hole is placed more proximally to avoid bone block breakage. The end is equipped with the standard Pullup device. The tibial bone block on the right is equipped with the Pullup XL device. It should be a half millimeter wider than the femoral bone block to allow for a better introduction of the graft. BTB, bone–patellar tendon–bone. Arthroscopy Techniques 2017 6, e833-e838DOI: ( /j.eats ) Copyright © 2017 Arthroscopy Association of North America Terms and Conditions
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Fig 5 Black plastic plug inserted in tunnel external aperture. To guide the Pullup XL button plate, a plastic cone-shaped plug is inserted in the tibial tunnel just before tightening the Pullup XL braid. In this situation, the plate is perfectly positioned at the upper part of the external aperture. This avoids flipping of the button plate inside the tibial tunnel. Arthroscopy Techniques 2017 6, e833-e838DOI: ( /j.eats ) Copyright © 2017 Arthroscopy Association of North America Terms and Conditions
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Fig 6 Rescue option when patellar tendon length is up to 5 cm. In this situation, there is a risk of not being able to tighten the Pullup XL device, even though the Pullup loops are reduced to a minimum. The Pullup XL device should be tightened on a 6-mm-wide staple inserted in the tibial epiphysis, 1.5 cm away from the tibial tunnel external aperture. It should be helpful to drill the longest femoral tunnel as is acceptable to increase the length of the graft inside the femoral tunnel. Arthroscopy Techniques 2017 6, e833-e838DOI: ( /j.eats ) Copyright © 2017 Arthroscopy Association of North America Terms and Conditions
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