I do 20-30 minutes of physical therapy for congenital knee condition, and I keep my weight down to reduce pressure on knees I still have bouts of trick knee about to happen. At least it feels it will happen. I was told to get leg press exercise machine. Please tell me which leg press machine allows me to adjust 1. The seat 2. The press, i.e. I wish to press parallel to the floor, at 45 degree angle, and at 90 degree angle 3. The weights I am surprised NordicTrack doesn't sell these. And Sears came up blank
