hello dr. According to my mri reports of left knee i have - a partial acl tear. subtle stir hypersensitivity noted in the medial femoral condyle suggestive of marrow edema/contusions. Grade l signal noted in posterior horn of medial meniscus . Mild hypersensitivity is noted in the inner fibres of the lateral collateral ligament . I d be glad if you could tell me the precautions i must take before i get the acl reconstruction surgery done and until how long can i avoid getting the surgery before furthering the damages. I look forward to your reply.