Dr Nguyen’s principles for repair of knee cartilage lesion

ICRS (International Cartilage Repair Society) Grading System of Defects

Grade 0 Normal cartilage

Grade 1 Nearly normal (superficial lesions)

Grade 2  Abnormal (lesions extend < 50% of cartilage depth)

Grade 3  Severely abnormal (>50% of cartilage depth)

Grade 4  Severely abnormal (through the subchondral bone)

Dr. Nguyen’s principles for repair / reconstruction of cartilage lesions 

Lesion < 1 cm2 = microfracture / bone marrow stimulation technique +/- HA (Hyaluronic Acid Gel) / PRP (Platelet-Rich-Plasma)

Lesion 1-4 cm2 = Autograft OATS/mosaicplasty or MACI (matrix derived autologous chondrocyte implantation)

Lesion > 4cm2 = MACI or fresh osteochondral allograft or harvest from both knees autograft OATS

Dr. Nguyen’s mosaicplasty procedure / cartilage transplant for cartilage defects in the #knee

The Osteochondral Autograft Transfer System (OATS) procedure.