Cerebral Palsy maybe/maybe not

Try toe walking, anyway. Knee is fine. Or, put a lift in shoe heel & knee is OK? Ah. Group 2B is actually from group 1 in disguise. Put it into group 1.

?? If the foot is stiffly in a down pointing posture, then when weight lands on the foot the toe hits first and then the heel. The stiff ankle link will thrust the tibia backward and thus lock the knee. The backward thrust tibia with weight on it will lock like a baby carriage lock and prevent knee flexion. That way swing is blocked by the downward pointing foot.

This is called "ground reaction". Ground reaction is not only seen in hemiplegia. It is, however, a particularly prominent source of difficulty in