Scott the Glucosamine MSM Chondroitin boast renewing cartilage and aiding healing etc. Sounds to me like a clicking could be bones hitting rubbing against each other because the cartilage is wearing out.

I'm finished doctoring. Ha ha!

Brickboo... trigger finger is caused by an inflamed tendon, nothing to do with joint cartilage. The tendon to extend the finger (or thumb) passes through a sort of tunnel in the knuckle. When it gets inflamed, it pops through the tunnel, but can't pop back, because of the swelling.

http://www.webmd.com/osteoarthritis/guide/trigger-finger