in the area of muscle which pokes out like an egg when locking off.
Perhaps also some strengthening exercises down the gym too
It would be strange if it was tendonitis, just because that's and overuse injury :wink: It could be related to your upper back. The ulna nerve runs from the spot between your spine and your shoulder blade, through the shoulder, through the inside of the elbow and out of your ring finger. If this nerve is shortened e.g scar tissue it will refer pain over the obvious joints that it passes.Its worth going to a Physio or in this case an Osteo who will give you a more proffesional opinion
mind you, it could be due to overuse, it's the right arm... :alco: