4, 7 & 8 plate series
The 4, 7 and 8 plate series with two or three holes for the crest screws and one or two for the tibial screw.
The plates for X-Porous TTA are made of titanium and offer nine sizes available, divided into three groups according to their size: series 4, series 7 and series 8. Usually, series 4 plates are used for small dogs, those series 7 for medium-large dogs and those of series 8 for large-giant dogs. In addition to the size, it is important that the surgeon also checks that the the plate fit to the shape of the tibia.
The plate is curved to allow for better adaptation to the tibial crest. Depending on the model, there are two or three holes in the proximal part for inserting screws into the tibial crest, while in the distal part there are one or two holes for inserting the screw into the tibial metaphysis. Tibial crest screws can be locked or non-locked, depending on the surgeon’s preference and the conditions of the specific procedure. The tibial screw is always cortical to allow the hinge function exerted by the plate during loading.
Detail of the locked version of the plate.
Use of the locked plates in the X-Porous TTA procedure
The new locked plates significantly increase the stability of the tibial crest for X-Porous TTA procedure.
The peculiarity of the plate is maintained as the plate, despite being blocked, always acts as a tension-band thanks to the single tibial screw. Although there are two holes on the tibial side, their purpose is to give to the surgeon the opportunity to choose the best position, and they must not be used to insert two screws, which would substantially change the biomechanics of the technique.
The holes on the tibial crest of the plate can indifferently accommodate 2.0 – 2.4 and 2.7 mm screws, allowing the correct size for the specific size of the crest not only by evaluating its overall size, but also the specific insertion area .
The plate ensures greater resistance to the translation forces that are applied on the crest, ensuring its stability even when its distal integrity is not maintained.
© X-Porous TTA created by Ad Maiora srl
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