knucklewalking
Knuckle-walking is a form of quadrupedal locomotion in which an animal moves on all fours with weight borne on the knuckles of the forelimbs. In this gait, the fingers are flexed and the palm is not used for support, while the wrists are kept extended to create a relatively rigid forelimb for pushing the body forward.
The behavior is most closely associated with great apes. It is best documented in chimpanzees (Pan troglodytes)
From an evolutionary perspective, knuckle-walking has been proposed as a potential primitive locomotor trait of the
In modern humans, sustained knuckle-walking is not typical. Human locomotion is primarily bipedal, and knuckle-walking is