Hack squats kill my knees.wounded knee said:I've done weight training including squats for many years. I don't know if I run faster but I've got strong legs which surely must be better than not?
Many people avoid squats because they are afraid of injury. If so try hack squats. You work the same leg muscles but lift the weight off floor from behind your back. If you Google Hack Squat you'll find a proper decription.