Partial meniscectomy ineffective, worsens knee health

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- FIDELITY trial tracked patients with degenerative meniscal tears for 10 years, comparing partial meniscectomy to sham surgery.
- Teppo Järvinen (University of Helsinki) reported that surgery patients had more knee symptoms, poorer function, and faster OA progression than controls.
- Raine Sihvonen argued that the assumption linking medial meniscus tears to pain is unproven, suggesting age‑related degeneration as the true cause.
- Partial meniscectomy remains a routine treatment worldwide despite declining use in Finland, affecting millions of patients annually.
- Sham surgery control group revealed that the placebo effect alone can account for perceived relief, underscoring the need for rigorous trial designs.
Why it matters: Patients gain by avoiding a surgery the 10‑year trial shows worsens knee outcomes, while insurers avoid costly follow‑up procedures; the 10‑year study period marks a turning point for orthopedic practice.




