Cerebral Palsy maybe/maybe not

measure its verticality relative to the ground, and its distal horizontal 'vector' (momentary speed of the foot in the direction toward the goal), and how much the shortening telescoping of the Hip-Ankle rod passing through verticality allowed clearance at mid swing (all that was needed, or just some, so look elsewhere for more).

Measurements vs measurements.

Is what one joint accomplishes altered by what another joint is doing? You betcha. An ABNORMAL joint angle may be the fix to an adjacent joint’s malfunction or inertial domino from it.