Is a Knee Arthroscopy of Any Benefit for the Middleaged Patient With Meniscal Symptoms?

Inclusion Criteria: * All (consecutive) patients referred to the orthopaedic department in Linköping for a suspected meniscal injury * Age:45-64 years old * No gonarthrosis (Ahlbäck=0) on standing radiographs Exclusion Criteria: * Rheumatic disease * Patellofemoral arthrosis * Fibromyalgia * A knee or hip replacement * A neurologic disorder including stroke * A contraindication for an operation * Catching or locking for more than 2 seconds more than once a week * A permanent extension deficit * Patients who cannot understand instructions in Swedish