My mother is 57 doctor took mri and said it require arthescopic meniscus cobolation because medial meniscus is mildly displacr and suggestive to tear?

Depends on Arthritis: Many people of 57yo will have finding of damage to the meniscus on MRI even if they have no clinical pain. However, in the absence of significant arthritis, and if sharp pain correlates with the meniscus damage noted on MRI and if physical exam is consistant, an arthroscopic evaluation with partial meniscectomy is reasonable. If significant arthritis is also present, a scope is less likely to help.

Meniscal tear: Not all meniscus need to be treated. Pstients w isolated pain and mechanical sypmtoms such ad locking catching may be a canidate for arthroscopic partial menisectomy if they have failed a conservative treatment l.