Task: Answer Verification
Input (English): Question: Is knee arthroscopic surgery beneficial to middle-aged patients with meniscal symptoms : a prospective , randomised , single-blinded study?
Answer: Middle-aged patients with meniscal symptoms may benefit from arthroscopic surgery in addition to a structured exercise programme. Patients' age or symptom history (i.e., mechanical symptoms or acute onset of symptoms) didn't affect the outcome.
Output (English): yes