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.
1 Removing the entire medial meniscus can lead to a bow-legged deformity and medial joint arthritis. 2  Removing the entire lateral meniscus can cause a knock-kneed deformity and lateral joint arthritis. 3  Location-A tear may be located in the anterior horn, body, or posterior horn. 4  A posterior horn tear is the most common.he medial meniscus and lateral meniscus are specialized structures within the knee. These crescent-shaped shock absorbers between the tibia and femur have an important role in the function and health of the knee.