NOT TRUE about Medial Meniscus is
Medial meniscus is

Semicircular or 'C' shaped
attached to medial collateral ligament
Firmly anchored to Tibia
Less mobile and More prone to injury when compared to Lateral meniscus
Semicircular in shape
Not attached to medial collateral ligament
Firmly anchored to Tibia
More prone to injury when compared to Lateral meniscus