The duration of conservative treatment for posterior horn meniscus degeneration depends on the degree of meniscus damage. Generally speaking, most patients will gradually recover within 3 to 6 months, and the details need to be different from person to person. If the posterior meniscus angle degeneration is mild, most patients will have significant improvement in their symptoms after rest, hot compresses and other physical therapy, usually in about 3 months of conservative treatment. For moderate posterior horn meniscus degeneration, most patients can recover gradually through 4 to 6 weeks of external cast immobilization and braking, physical therapy such as hot compresses and microwaves, anti-inflammatory and pain-relieving medications such as Celecoxib, and rehabilitation training for 3-6 months at a later stage. In case of severe posterior horn meniscus degeneration, the meniscus damage is more serious, conservative treatment often can not be cured, may need surgery. Posterior horn meniscus degeneration is recommended to consult a doctor in time, with the help of doctors to clarify the degree of damage, and to carry out targeted treatment or therapy.