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.
1 Outside of Knee: Pain on the outside of the knee, or lateral side, is commonly caused by lateral meniscus tears, LCL injuries, IT band tendonitis, and arthritis.  Back of Knee: Pain in the back of the knee can be due to the collection of fluid, called a Baker's Cyst.