If a torn cartilage (meniscus) is not degenerate or fragmented, and the tear is reducible then there is a good chance it can be repaired
Displaced bucket handle tear
Once the meniscus has been reduced and sutured in place it requires time to heal. While the meniscus is healing it is protected by only allowing weight bearing, with crutches and avoiding deep flexion (beyond 90 degrees) for the first four weeks post op. Following this full weight bearing and full range of movement are allowed. Between 70% and 90% of meniscal repairs will become asymptomatic and patients can usually return to full activities including sports following rehabilitation.
If the meniscus does not heal and the patient has ongoing pain, locking and swelling then a further arthroscopy with removal of the torn section is necessary.