A Randomized Trial of Autologous Chondrocyte Implantation Versus Alternative Forms of Surgical Cartilage Management in Patients With a Failed Primary Treatment for Chondral or Osteochondral Defects in the Knee. - Snow, Martyn; Middleton, Lee; Mehta, Samir; Roberts, Andrew; Gray, Richard; Richardson, James; Kuiper, Jan Herman; Smith, Anthony; White, Steve; Roberts, Simon; Griffiths, David; Mohammed, Aslam; et al. (American Journal of Sports Medicine, 2023)