You brought us into prison and laid burdens on our backs.
NMVyoui brought us into the net; youi laid affliction upon our loins (thigh and groin area; often used for the reproductive organs).
OJBThou broughtest us into the metzudah (prison); Thou laidst a mu'akah (burden) upon our loins.
T4TIt is as if you allowed us to fall into traps [MET], and you forced us to endure difficult things which were like putting heavy loads on our backs [MET].