But according to a 1990 study, 56% of bipolar patients also have a substance abuse problem, which can make treatment even more difficult. Experts say that some bipolar patients are known to self-medicate with drugs or alcoholthough it's not recommended. In fact, they say, it does more harm than good.
A Meniscus Tear. The two most common causes of a meniscus tear are due to traumatic injury (often seen in athletes) and degenerative processes (seen in older patients who have more brittle cartilage). It is not uncommon for the meniscus tear to occur along with other damage inside the knee.
The seriousness of a meniscus tear depends on which one in injured and the location, type, and shape of the tear. When a meniscus tear occurs, is it usually the medial rather than the lateral meniscus that is damaged. This is because the lateral meniscus, unlike the medial meniscus, has a section that is not attached to the wall of the knee joint.