Subchondral insufficiency (SI) of the knee manifests as pain, with imaging showing edema in the femur or tibia. SI represents bone failure beneath cartilage in early to moderate osteoarthritis, and current surgical options are limited short of joint replacement. A February 2025 study introduces a novel structural solution adapted from construction engineering: a "rafter" arrangement of biointegrative, fiber-reinforced nails designed to internally support the failing bone. Raf