Leg Exercises for Mass?

I have what my physical therapist called "Runners Legs". Better known to the rest of us as chicken legs. I had an injury a few years back, so I have used that as somewhat of an excuse. Anyway, for legs I do 4 sets of squats, 4 sets leg extensions, 4 sets one leg calf raises and 4 sets seated calf raises, 4 sets of leg curls and 4 sets of stiff-leg dead lifts. Does anyone have a better routine for mass? I thought about deleting the leg extensions and adding lunges. Thanks for any advice.

wow thats alot of legs in one day! I juststarted working out.Yesterday I completed my one week cycle.my leg routine consists of dumbell excercises only.Because thats all I have

3___6/12 lunges
3___6/12 single leg squats
3___6/12 squats

you have to try the single legs they are a killer !

oh and 3___6/12 calve raises

Do squats,leg press,lying leg curls,and stiff-leggeds.Standing and seated calf raises for calves.Hacks are good too with heavy weight. Eat more food!!