What does mucoid degeneration of the medial meniscus mean? Seen on MRI. Also what does truncation mean of the posterior horn attaching roots mean? Help

Mucoid degeneration, like degenerative arthritis of a joint, generally occurs as a results of aging. It can cause pain and to a meniscal tear. Truncation means that the size of the posterior horn is smaller than normal, usually due to a prior tear or surgery.