The document discusses various types of ankle injuries and treatments. It focuses on ankle arthritis, cartilage defects, and ligament injuries. For cartilage defects, it recommends treating the worst lesion with cartilage grafting from the tibia. Rehabilitation for cartilage grafting involves initial non-weight bearing, continuous passive motion therapy, and a early emphasis on regaining full range of motion. Rehabilitation for ankle injuries generally should provide protection, improve joint mechanics and gait, enhance proprioception, and restore patient function.