The meniscus is the shock absorber of the knee.

Knee cartilage

Meniscus from top

Another view of the 'knee cartilages'.

Meniscus from side

Overview of the anatomy of the 'knee cartilages'.

The classical indication for meniscal repair is an acute longitudinal, unstable tear of >1cm in the periphery of the meniscus which is of traumatic (nondegenerative) etiology.

The knee should be stable or a concomitant ligament...

An 'interpretation' of a paper from 2007, which is a literature review trying to determine whether cruciate ligament injury predisposes one to osteoarthritis of the knee.

Young people have special issues when it comes to knee injury, because their bones are still growing.