I’m 43 years old and 2 weeks ago I hurt my back un-racking the barbell. I didn’t stay as tight as I should have and the bar gave a little bounce. I decided not to attempt my set and called it a day. My question is how can I grow my legs if I don’t want to do anything backloaded going forward and that includes front squats. Being out of the gym due to this injury is depressing and at my age it’s not worth it anymore. Thanks for the guidance.