What are the similarities between calf strain or baker's cyst?

Lower leg issues.: These are 2 different diagnoses that may both result in knee and/or lower leg pain and problems with the way you walk. A baker's cyst (popliteal cyst) is a true cyst located in the space "behind" the knee. If large enough, it may affect the calf muscles but usually a cyst does not involve the muscles. Baker's cysts may change size, so that they seem to involve the calf, but they are at the knee.