GAIT-KNEE DYNAMICS

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SUMMARY

1. Functions: support during stance phase & clears the ground during swing phase.

2. The only time it's maximally extended is during heel strike. It never fully extends.

3. Functions of 90o knee bending: for stairs and getting up from a seated position.

4. Mid-stance: knee flexes to 15o: 20o

5. Toe-off: knee flexes to 30o: 40o

6. Mid-swing: maximum flexion is at 65o and is just prior to mid-swing.

7. There is very little need for the hamstrings to flex the knees during gait.


Reference(s)

Cifu, D.X. (2020). Braddom’s physical medicine and rehabilitation. Elsevier. Get it on Amazon.
Cuccurullo, S. (2019). Physical medicine and rehabilitation board review. New York: Demosmedical. Get it on Amazon.
O’Young, B., Young, M.A. and Stiens, S.A. (2008). Physical Medicine and Rehabilitation Secrets. Mosby. Get it on Amazon.