What do I mean by orthopedic cost?
I mean the stress and strain imposed by an exercise on the non- target tissue.
I love the one leg deadlift / skaters squat because the orthopedic cost is less than a back squat, a front squat or a deadlift. I can target the lower body and lower the “orthopedic cost” to the lower back significantly.
Generally when I say I don't like an exercise what I often mean is I don't like it's orthopedic cost.