Elbow locking up during assisted pull-ups

Recently while doing assisted pull-ups, my right elbow has been locking up after I lower myself down. It's just a little painful, and I have to twist my arm slightly while I'm hanging for it to feel like it pops back in, and then I can pull myself back up. Has anyone else experienced this or know what could be the reason for it? It was happening during every pull-up today (until I gave up since it was starting to hurt more)

Try neutral grip pullups (AKA hammer grip pullups). They are the easiest on your elbow.

Original Post by cassie_1992:

Recently while doing assisted pull-ups, my right elbow has been locking up after I lower myself down. It's just a little painful, and I have to twist my arm slightly while I'm hanging for it to feel like it pops back in, and then I can pull myself back up. Has anyone else experienced this or know what could be the reason for it? It was happening during every pull-up today (until I gave up since it was starting to hurt more)

That is not normal.

Change your grip or the width of your arms.