Wilson presented a similar case before the Clinical Society of London, in 1888.

The "Camel-boy," exhibited some years ago throughout the United States, had reversion of the joints, which resembled those of quadrupeds.

He walked on all fours, the mode of progression resembling that of a camel.
Figure 216 represents Orloff, "the transparent man," an exhibitionist, showing curious deformity of the long bones and atrophy of the extremities.

He derived his name from the remarkable transparency of his deformed members to electric light, due to porosity of the bones and deficiency of the overlying tissues.
Figure 217, taken from Hutchinson's "Archives of Surgery," represents an extreme case of deformity of the knee-joints in a boy of seven, the result of severe osteoarthritis.

The knees and elbows were completely ankylosed.
Infantile spinal paralysis is often the cause of distressing deformities, forbidding locomotion in the ordinary manner.