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• The foot is raised high, and the sole strikes the ground at once and very suddenly.

1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland

• The typical gait of tabes, in which steps are taken slowly and deliberately but there are irregular movements of the legs, the feet are jerked outward, making a swinging circular movement, and the heels are brought to the ground with a stamp, the toes following with a peculiar flapping sound.

1916 - Appleton's medical dictionary
By Smith Ely Jelliffe