Millions of adults undergo arthroscopic knee surgery annually for meniscus tears, yet decade-long tracking reveals this common procedure offers no meaningful advantage over conservative treatment. This finding challenges a cornerstone of orthopedic practice and suggests many patients endure unnecessary surgical risks. The 10-year follow-up data from a controlled trial demonstrates that patients who received arthroscopic partial meniscectomy—where surgeons remove torn cartilage fragments—showed identical functional outcomes compared to those treated with physical therapy alone. Pain levels, mobility scores, and quality-of-life measures remained statistically indistinguishable between surgical and non-surgical groups throughout the extended monitoring period. The surgical cohort experienced typical procedural complications including infection risk and temporary activity restrictions, while the conservative treatment group avoided these entirely. This represents one of the longest tracking studies of its kind, providing unprecedented insight into whether short-term surgical benefits translate into lasting improvements. The implications extend far beyond individual treatment decisions, potentially reshaping clinical guidelines for degenerative meniscus management. Given that degenerative meniscus tears affect roughly 60% of adults over age 50, these findings could influence treatment protocols for millions. The research adds substantial weight to growing evidence questioning the necessity of arthroscopic intervention for non-traumatic knee cartilage damage. However, the study's specific focus on degenerative tears may not apply to acute traumatic injuries, where surgical repair mechanisms differ fundamentally. This distinction remains crucial for both clinicians and patients navigating treatment options.