[biggin]

Try doing rack dead lifts in a squat rack to ease the tension on your knee until it heals up. I had a reconstructive knee surgery for my ACL and to work my way back up to full range of motion I utilized that along with bench squats.

This is actually what I did. Used a squat rack that is like a rectangle on end (not sure the exact name) and kept the stop bars at the bottom. Let me get a good pull without having to bend my knee past the bad point.