Low Prevalence of Isolated Medial Meniscal Tears in Young Females With Stable Knees, Barak Haviv et al. 2015.

Database: 2425 arthroscopic knee surgeries
Time: over a 6 years period
Participants: 591 patients (480 males and 111 females) younger than 40 years.

Look at the tabel under 36-40 years
and under MMT (medial menicus tear) vs LMT (lateral menicus tear). 14,4 of males have MMT and only 2,5 of females.
If you look in the younger age groups, the change for have a menicus tear drops significantly. So we can conclude, that menicus tear are a normal thing when our body ageing, and male are a more in risk than females.

From a database of 2425 arthroscopic knee surgeries performed over a period of 6 years, 591 patients (480
males and 111 females) younger than 40 years were included.

Patients were divided into 5 age groups and subdivided according to their surgical findings.

Of the 591 arthroscopic surgeries, only 6 females (vs 87 males) younger than 30 years had isolated medial meniscus tears.

The number of stable knees without meniscal tear at arthroscopy in all age groups was relatively high. The odds ratio for having a medial meniscal tear was significantly higher in males.

The results suggest a protective mechanism for isolated medial meniscal tears in younger females as opposed to other injuries of the knee. Isolated medial meniscus tears in stable knees are
uncommon in females younger than 30 years; thus, young females with suspected tears should be reevaluated and treated conservatively before considering surgical solutions.