Legal Definition of prospective. 1  1 : relating to or effective in the future a statute's prospective effect. 2  2 : likely to come about : expected to happen prospective inability to perform the contract. 3  3 : likely to be or become a prospective buyer.
Bakers Cyst or Popliteal cyst is a localized swelling at the back of the knee. It is usually caused by an injury or condition in the knee joint which will make the back of the knee swell up increasing pressure and causing pain.
In addition, weakness of leg muscles due to overuse, chronic inflammation and endocrinological disorders may also lead to pain behind knee joint. Lastly, aging process is also responsible for pain and discomfort due to malnutrition and other causes.