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ACI
Autologous Chondrocyte Implantation
Autologous Chondrocyte Implantation (ACI) is a technique for the treatment of large isolated cartilage defects. A small sample of cartilage is harvested from a non-weight-bearing part of the joint during arthroscopy. In a laboratory the chondrocytes are dissolved away of the tissue composite and multiplied in culture dishes.
After a cultivation period of 3 to 4 weeks a cell count of approx. 1 million cells/cm2 is achieved, depending on the size of the defect. In a second surgical procedure, the Chondro-Gide® is inoculated with the cells and fitted into the defect. Under the physicochemical effects of the articular milieu, the cells, accompanied by a carefully-adapted rehabilitation programme, form high-grade regenerated cartilage, which has almost 90% of the biomechanical properties of healthy articular cartilage (Steinwachs, 2008).
Indications
Chondral & osteochondral lesions grade III-IV (Outerbridge classification) Osteochondral defects in conjunction with bone-grafting Focal, traumatic defects Defect size 6.0 - 12.0 cm2 Patients aged between 18 - 55 years
Advantages in the use of Chondro-Gide versus periosteum
No need for a second operative site to remove periosteum
Reduced risk of hypertrophy
Reduced risk of delamination
Shorter operative time
Easy handling
Consistent quality of matrix
Further information about Chondro-Gide® and ACI is available from your Geistlich Surgery representative.
