After my knee injury, I felt a lot of pressure in my knee when I performed squats & lunges, even after the swelling and fluid accumulation had subsided. For me, this pressure was created by tightness in my quadriceps muscles. Initially, a full "Couch Stretch" was not possible; it created too much pressure in my knee. So I regressed the traditional "Couch stretch" by moving my knee farther away from the wall and started working on quadricep muscle flexibility at a degree of knee flexion/bend that