Assisted passive extensions are knee rehabilitation exercises.

assisted passive extension of the knee
The assistant places a rolled-up towel under the knee and then helps to straighten the leg to increase extension.


The importance of regaining extension

The last few degrees of extension are important in allowing the knee to lock back when standing still in a relaxed position.


Full arc extensions

Full arc extensions are early exercises to strengthen the quadriceps muscle - this article offers a video and photos to explain the exercise.

Assisted passive extensions

Exercise to increase range of movement.

Assisted flexion

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



Osteoarthritis After Anterior Cruciate Ligament Reconstruction: The Importance of Regaining and Maintaining Full Range of Motion. Shelbourne KD, Freeman H and Gray T. ELS Sports Health. 2012 Jan; 4(1): 79–85.

See also -


Book - eCornerstones of Early Knee Rehabilitation

Easy-to-understand book filled with simple knee exercises.