I Tore My Left Bicep 1 Yr Ago Doing Pull

I tore my left bicep 1 yr ago doing pull ups. All of a sudden my bicep got really tight and I dropped down to the floor instantly. I now have a dent in my bicep (top upper right side of bicep) near where my pectoral muscle and bicep meet. There was little black and blueness after the injury if any. It only took 2 days or so and the pain was basically gone. I haven't had an issue since the injury but have a dent in my bicep. Is my bicep tendon torn or is this just a tear in the muscle itself?