The pain is your body's feedback; what it is telling you can take time to decipher. I'm an older lifter as well and have found that many times the area that is hurting isn't necessarily the injured body part.
If you don't currently wear knee sleeves for leg related exercises, I highly recommend them. I use the 7mm Rehband sleeves, don't recall the model # at the moment. Also, I use elbow sleeves on almost every lifting day. The extra heat is very helpful.
It never hurts to get blood flow into an area before heavy lifting. Some things Kel mentioned to me quite a few years ago that have been helpful:.
Do some ab work before attacking back or leg lifts
Moderate weight and higher rep leg extensions with your knee sleeves on before any leg exercises. I may be mistaken, but I think Kel may throw in a little time on a bike prior to squats/leg day.
Personally, I've gotten to the point that I will warm up my joints before every lift, whether it be shoulder, elbows, hips, knees, etc.
You may want to do some reading here:
https://forums.steroid.com/injuries-rehab/
and here:
https://forums.steroid.com/workout-training/
Look for a thread Marcus made on breathing and bracing. It will certainly help you if you don't already incorporate it.
There are several of us in the 50 and over club on the forum, so don't let anyone tell you lifting is strictly a young person's game.
