Active assisted flexion is a seated exercise, where active flexion of the knee is helped further by pressure from the good leg.

active assisted flexion starting position active assisted flexion Active assisted flexion
Starting position with feet free to swing and the bad leg as relaxed as possible, probably a lot less flexed than in this example. Use the good leg to slowly push the bad leg into further flexion. Hold the position for a few seconds before relaxing, and repeat.

The assisting limb should apply a slow long stretch, gently taking the limb into deeper flexion even though it may be uncomfortable, holding it there for 20 seconds or so and then slowly releasing the pressure.


Range-of-motion is a key concept in knee rehabilitation. This paper discusses how it is measured.



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

See also -


eBook - Cornerstones of Early Knee Rehabilitation

Downloadable free eBook offering early knee rehabilitation tips for readers.