Patients with a confirmed meniscal tear, likely degenerative in nature, will be invited to participate in the MenTOR study. Male and female adults with a MRI-evident meniscal tear and evidence of no/minor osteoarthritic change (KL grade 2 or less) who are undergoing arthroscopic treatment, or planned arthrocentesis/injection will be identified in clinics all located at the Nuffield Orthopaedic Centre (NOC). The primary source of recruitment is anticipated to be the secondary care orthopaedic knee service. The patient's symptoms will be such that they warrant further management.