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.
However, most people are never aware they have a meniscus. That is, until they injure their meniscus. Meniscus tears are a common injury to the knee and cause cause pain, swelling, and limited mobility. One of the most serious types of meniscus tears is called a bucket-handle meniscus tear.