What happens if my acl and cartilage are both torn for 4 months what can happen if i don't get surgery?

Problem: You need to see the orthopedic. He will advise if your injury requires surgical repair. If it does get it done or you will have a lot of problems with the knee

Depends: If you initially treated this with appropriate rest and rehab, 4 months should be near optimal healing time. If you are not having any problems with it, no further treatment is indicated. If you are still having significant problems with it, surgery may be indicated. In that case, not having surgery may result in worsening problems with further aging. Surgery may not fix everything.