On All Fours, Humans Don’t Move Like Apes or Monkeys | Video

5 Turkish siblings, with very rare Uner Tan Syndrome (UTS), walk in lateral quadrupedal motion. Apes and all other primates use a diagonal limb-fall pattern.

'Family That Walks on All Fours' Not Evolutionary Throwbacks

credit : Shapiro LJ, Cole WG, Young JW, Raichlen DA, Robinson SR, et al.