146 patients with medial meniscus tear were originally randomized to undergo either arthroscopic partial meniscectomy (APM) or sham surgery for the purpose of determining if APM was associated with significant therapeutic benefit in terms of reducing the prevalence of mechanical symptoms (knee catching or knee locking) throughout a 12-month follow-up period. Results demonstrated that APM did not provide any additional therapeutic alleviation of mechanical symptoms, as evidenced by similar risk differences and ratios in both the general study population and the subgroup of patients showing mechanical symptoms prior to surgery. Further investigation with randomized controlled methodology is recommended in order to confirm comparability of APM and sham surgery for the prevalence of mechanical symptoms.