Tens placement on forearm When using a TENS (transcutaneous electrical nerve stimulation) device on the forearm, there are several common placement options depending on the specific condition or goal of the therapy. Here are a few suggested placements on the forearm for TENS: Inside and outside of the forearm: Place the TENS electrodes on the inner and outer sides of the forearm, around the area where you're experiencing pain or discomfort. This placement can be effective for conditions such as