MUD Mired in time...

reflex acts to extend it. Side sway and stiff full leg swing follows. Making this more difficult is that high hamstring activity and contracture requires compensatory quadriceps output to overcome hamstring excess for function to occur. This RF peculiarity is thus hidden in a sea of quadriceps stimulation. Manual testing using slow and then fast movements, with skill, help sort it out. But is is another kind of mud as abnormalities and reactions to them pile on. There is a lot to know, but step-wise viewing of the walk frame by frame is super handy.

Plantar flexion contracture (or device) in stance retro-pulses. One would fall backward. Getting the center of mass over support center requires a 'jack-knife' posture. This flexed hip posture is far more likely to reflect an uncompensated (by wedge) equinus. Simple wedge correction in the shoe restores stance ease with less 'stability' required. That ease is reflected in high function. Extending the heel backward in a shoe with an AFO prevents ataxic back knee. But note, that back knee is a stabilizing trick. It bangs straight such that the patient feels it as secure before swinging the other leg. Nice trick, but damaging to the knee. Again stability vs mobility. Mud. So much for mud. Let's recap, so far but more directly.

For STRIDE, we use height as our ruler. On a circle with a diameter of one stature, the feet will 'wheel' align during right-left and left -right weight transfer which includes energy transfer.