Fadi
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Adding to what dandexter has already stated, I would say that front squats have a much greater advantage over back squat if one needs more quadriceps/hamstring involvement over gluteus involvement. Think about it for a second. Your gluteus muscle is the strongest in your body, period! What if we can minimise its involvement when squatting, would we not then lift much less weight with the same leg hypertrophy benefits, whilst simultaneously minmising the stress the spine, hip, and knee joints are placed under? The answer is of course we would minimise injury and maximise hypertrophy, all whilst getting a best bang for our lifting buck!Front squats because I don't see the use why not just do normal squats instead.
I hope you have found some benefit in my answer Relevant.
Fadi.