膝關節置換術是一項重大手術，因此通常僅在其他治療方法（例如物理療法或類固醇注射）不能減輕疼痛或改善活動能力時才建議使用。
Knee replacement is a major operation, so it is usually recommended only when other treatments (such as physical therapy or steroid injections) cannot reduce pain or improve mobility.
