Collagen-Covered Autologous Chondrocyte Implantation Versus Autologous Matrix-Induced Chondrogenesis: A Randomized Trial Comparing 2 Methods for Repair of Cartilage Defects of the Knee

Answers are grounded in this paper and cite their sources.

• What was the primary endpoint, and how big was the effect?
• What are the main limitations?
• How does this compare with earlier trials?