Flexion means 'bending'.

range of motion
Knee range of motion.


Flexion range of motion

A straight leg is said to be at zero (0) degrees of flexion. A fully flexed knee may reach about 140 degrees of flexion, depending on the muscle/fat bulk of the limb.


Lying wall slides

A gravity-assisted exercise.

Assisted flexion

Video of an Assisted Flexion exercise to help to re-build range of motion.



Increasing Knee Range of Motion Using a Unique Sustained Method. Shah N. N Am J Sports Phys Ther. 2008 May; 3(2): 110–113.

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