Meniscus repair and centralization: Preserving meniscus function

•Posterior root tears of the meniscus accelerate cartilage degeneration.•Meniscus extrusion leads to the initiation and progression of knee osteoarthritis.•Meniscus preservation surgeries include meniscal repair and centralization.•A centralization can reduce meniscus extrusion and improve meniscus hoop function.•Meniscus preservation surgeries would prevent long-term cartilage degeneration.