Key result
All-arthroscopic MACI offers a two-stage surgical technique to treat femoral trochlear knee defects.
Describes an all-arthroscopic technique for matrix-associated autologous chondrocyte implantation to treat femoral trochlear defects.
Describes all-arthroscopic MACI for trochlear defects; leaves open questions of durability and comparative outcomes.
Matrix-associated autologous chondrocyte implantation (MACI) is a 2-step technique designed to treat symptomatic full-thickness articular cartilage defects of the knee. In this technique article, MACI (autologous cultured chondrocytes on porcine collagen membrane) is used to treat a femoral trochlear defect of the knee. Treating a defect with this technique leads to improved clinical outcomes by restoring the native chondral surface architecture and biomechanics of the knee. In addition, it has the potential to prevent or delay further progressive degeneration of the joint. It is a 2-stage procedure consisting of an initial arthroscopic cartilage biopsy, followed by 4 to 6 weeks of in vitro chondrocyte expansion and, finally, re-implantation. We recommend performing the MACI procedure arthroscopically for the second stage to treat a femoral trochlear defect. During the second surgical procedure, we examine and prepare the recipient site, followed by graft introduction in an all-arthroscopic manner via dry scoping, secured by a thin layer of fibrin glue.
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Zhang et al. (2024) studied Femoral trochlear defect of the knee. All-arthroscopic matrix-associated autologous chondrocyte implantation (MACI) was evaluated. All-arthroscopic matrix-associated autologous chondrocyte implantation (MACI) is a 2-stage surgical technique described for treating femoral trochlear defects of the knee.
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