Cartilage Autograft Implantation System (CAIS) for the Repair of Knee Cartilage Through Cartilage Regeneration

Inclusion Criteria: * A male or female 18 to 55 years of age, * Has 1 or 2 focal chondral lesions, that require repair, per index knee presenting with moderate to severe knee pain. Each lesion is ≤6 mm in depth and has an area of ≥1 cm2 and ≤10 cm2. Arthroscopic confirmation indicates that the lesions are either a non-OCD lesion between grades I and III (D) or an OCD lesion between grades I and IV(A) * Prior failed chondral treatment is allowed if the procedure occurred \> 6 months for debridement and lavage or \> 1 year for marrow stimulation techniques. Exclusion Criteria: * Have more than 2 chondral lesions on the index knee, * Bipolar lesions on the index knee, * Greater than 5 degrees of malalignment, * Require bilateral surgery * Have a diagnosis of clinical and/or radiographic disease of the index joint.