Anything that you can hang onto while you work on your lunge technique is helpful. Naturally you can't use weight unless you hold a dumbbell in one hand but I think learning proper form is more important than how much weight you use, least at first. use a chair, a yardstick, a broom handle, whatever you have that will allow you to have a bit of help during your lunge.
After you get more familar with your lunge depth and length and your balance gets better you can do dumbell lunges or even barbell lunges with more balance and less fear of falling. This is from KlutzQueen too.

(gotta proofread!)




I've always been doing other things and also wanted to avoid free weights on leg day because of my tendoinitis. You'll have to excuse me but it's been a long day and I'm brain-dead...
What do I do with the yardstick? I'm sure I'll go DUH! when you tell me... I need all the help I can get because I need to do these on a regular basis. That means I need to learn to do them well and with proper form! Any help is appreciated. I am tired of using convenient excuses to avoid them I WILL master lunges!