Abram SGF, et al. - In a cohort of patients with meniscal tears who had undergone arthroscopic partial meniscectomy (APM), researchers identified the long-term risk of undergoing knee arthroplasty. Over a 20-year period, a retrospective national cohort of patients with a history of isolated APM has been identified. Patients on the same knee with prior surgery were excluded. Compared with the general population, patients developing a meniscal tear undergoing APM are at greater risk of knee arthroplasty. In the impacted knee of the patient, this danger is three times higher than in the contralateral knee. Compared with men, women in the cohort were at double the risk of progressing to knee arthroplasty. These significant new reference data will inform shared decision-making and improve treatment, prevention, and clinical monitoring methods.