DEVICE FOR FIXATION OF THE GRAFT IN MOSAIC TRACTIONPLASTY

Description

Conventional mosaicplasty was born to treat small chondral or osteochondral defects, replacing damaged cartilage and subchondral bone with one or more autologous osteochondral grafts. This technique has the following drawbacks:
Use a healthy area to treat another sick one, with the consequent morbidity that it may entail for the first.
The instruments used do not have any guidance system that allows maintaining perpendicularity with respect to the area in which they are working. Maintaining this perpendicularity is essential to avoid possible breakage of the cylinders (grafts) to be implanted.
The insertion of the graft is carried out by percussion, that is, the sensitive chondral tissue to be implanted is introduced by hitting it, which can cause damage to cell viability and less success of the intervention, according to studies carried out for this purpose.
Once insertion has begun, it is not possible to extract the graft, for example, for replacement.
For this reason, the research group has perfected the conventional mosaicplasty technique, managing to develop the so-called traction mosaicplasty in which, by means of two devices, specifically designed for this technique and used in combination, they allow to solve the aforementioned problems.

Advantages

- Hitting the delicate chondral surface of the cylinder is avoided, so that its implantation is done by pulling from the outside of the knee and not hitting from the inside.
- The technique incorporates the use of a guide that maintains the necessary perpendicularity with respect to the area we are treating at all times. This makes the technique more reproducible.
- It allows both inserting the graft and extracting it for cases of replacement of the same, for example.