How to do knee pain treatment at home for flexibility?

How to do a knee bending stretch safely after after common running injuries or knee pain. Great knee flexibility exercise specially for knee pain management and acute knee injury or arthritis. If you have knee stiffness due to swelling, arthritis or guarding after an injury…you want to do a non-weight bearing stretch to improve knee flexibility. This exercise also improves circulation and lubrication of to the knee joint without putting pressure on the joint unlike other weight bearing stretches like squatting, etc.