alternative
 

I was wondering if there is an alternative besides ding seated row for middle back in a powerlifting routine?

Try Pendlay Rows.

These are sometimes referred to as 90 degree rows as you are bending over at the waist at a 90 degree angle.

I think dumbbell rows will solve your problem.

I've been doing DB rows for a while now and although they are tough when they get heavy they are useful. Good for grip and back development. Good tool for deads.

IW

idk what this is

For you I will also suggest dumbbell rows will be good option.