I go for massaging with my fingers, by placing my thumb on top and wrapping my hand fingers round the back, this seems to put my fingers in the right position to massage transversely across the tendon.
I did not however start doing this until a couple of weeks after starting the cold water baths and wrist curls which had reduced the general pain, the rational being that it was probably aggravating it more than helping while the tendonitis was still quite acute. In fact I only started massaging when the cold water baths started to seem superfluous and I was reducing their frequency.
My physio gave me acupuncture, both in my shoulder, elbow and wrist/hand. It seemed to help by releasing some of the tension in the tendons/general area allowing him to manipulate it more successfully/with less discomfort. However even, he, a firm believer said that acupuncture alone is not going to fix the problem, it is the exercises/icing that fix it.
However maybe we could all save some time and just buy some accapi/nexus supports, rather than any of this physio/massaging/icing/exercise bollocks
.