Have medial meniscus tear w/ cyst wearing hinged knee brace but calf is very painful what should i do?

How helpful is brace: If the brace is the source of the calf pain, but helps the knee, then an adjustment to the brace (size, fit, etc.) could be considered. Alternatively, a new brace could be utilized. Personally, I don't routinely use braces for meniscal tears unless there is a ligament tear as well or associated arthritis with a misaligned knee. Seek additional help if the brace is not the cause of the calf pain.