In daily life, almost everyone has experienced knee joint pain. However, some people have pain that worsens and even becomes so severe that walking becomes difficult.
Knee joint pain can be roughly divided into the following stages based on a patient’s age:
- Gestation period: between zero and 20 years old.
- Preclinical period: between 20 and 40 years old.
- Clinical period: between 40 and 60 years old.
- Disability period: between 60 and 80 years old.
