ORTHOSES-KAFO KNEE JOINT (POSTERIOR-OFFSET)

SUMMARY

1. For patients with weak knee extensors and some hip extensor strength.

2. It allows free flexion and extension of the knee during the swing phase of gait and helps keep the orthotic ground reactive force in front of the knee axis for stability during stance.

3. Helps place the ground reactive force anterior to the orthotic knee joint, creating an extension moment at the knee during stance to compensate for the weak knee extensors.



Fig: posterior offset knee joint

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.