Lat Pull-downs Behind Neck:

No story to go with this one, but think about it. Eventually you'll be doing some heavy weight. In a very unnatural position. That is a recipe for injury. It's much more natural and safe to do same movement to front. Either way your lats are getting worked. But behind neck puts pressure on shoulders which isn't muscle group you are trying work.

This same philosophy goes for pull-ups. They should be done to front as well. If you do pull-downs, try doing it to front. Don't even think about behind neck as they won't do any more for you except possibly give your an excuse not to do any more pull-downs.

Marc

I did stop doing biceps movements until pain subsided. Once pain was significantly less, I decided to adjust my form, have a spotter assist on certain bicep exercises and used a topical cream (Biofreeze by AST). I changed movement to go strict on any and all bicep exercises. My arms are now tight to sides with constant tension on muscle. Using a spotter for dumbbell bicep curls helped me eliminate natural tendency to flare out arms to get that weight to completion phase of exercise. Heavy weight with arms slightly out tends to put a lot of pressure on that tendon.

Taking a break from exercises allowed me to heal enough to think rationally about adjustments I needed to make in my routine. Going back to strict form, using a topical (heat) cream and having a spotter assist with a few of bicep movements has all but eliminated (in a medical sense) my Tendonitis . I suffer no more pain from bicep movements because of these modifications.

Marc