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Updated: May 9, 2025
Fourteen long quill feathers diverge on each side of the metacarpal and phalangial bones, and decrease in length from 6 inches to 1 inch. The wings have a general resemblance to those of gallinaceous birds. The tarso-metatarsal, or drumstick, exhibits at its distal end a trifid articular surface supporting three toes, as in birds.
The "cannon bone" answers to the middle bone of the five metacarpal bones, which support the palm of the hand in ourselves. The "pastern," "coronary," and "coffin" bones of veterinarians answer to the joints of our middle fingers, while the hoof is simply a greatly enlarged and thickened nail.
An Indian chief asked Captain Cook, at his table, if he was a Tata Toa; which means a fighting man, or a soldier. Being answered in the affirmative, he desired to see his wounds. Captain Cook held out his right hand, which had a scar upon it, dividing the thumb from the finger, the whole length of the metacarpal bones.
It follows, however, that splints occur in young animals; that the affection seldom starts in subjects that are ten years of age or older, and that when the exostosis has formed, lameness usually subsides. Anything which will cause undue strain or irritation of the metacarpal bones in young animals, is quite apt to result in a splint being formed.
There is a long bone, termed 'metatarsal', answering to the metacarpal, for each digit; and the 'tarsus', which corresponds with the carpus, presents four short polygonal bones in a row, which correspond very closely with the four carpal bones of the second row of the hand. In other respects the foot differs very widely from the hand.
In the syphilitic lesion, skiagrams usually show a more abundant formation of new bone, but in many cases the doubt is only cleared up by observing the results of the tuberculin test or the effects of anti-syphilitic treatment. Sarcoma of a phalanx or metacarpal bone may closely resemble a dactylitis both clinically and in skiagrams, but it is rare. Treatment.
The one on the left hand of the picture is made of bone, and is inlaid with a small brass name-plate; that on the right-hand side is of ivory delicately turned, the scoop being exceedingly thin; and those in the centre are all home-made out of the metacarpal bones of the sheep, being slightly ornamented with cut X-shaped lines and hatchings.
The wrist joint is the second angle of the wing. The hand is the terminal segment of the wing, composed of the metacarpal bones and the digits or fingers. Of the last-named organs there are ordinarily three, forming a graceful tapering point to the wing, and giving to it the symmetry and proportion that are required for effective use.
This condition is occasionally observed and no positive explanation of the reason for its existence can be given. That mal-position en utero causes the metacarpal bones to develop in length so rapidly that the tendons are too short, is an explanation that is offered.
When growing in the interior of a bone it causes a spindle-shaped enlargement of the shaft, which in the case of a phalanx or metacarpal bone may resemble the dactylitis resulting from tubercle or syphilis. A chondroma appears as a clear area in a skiagram.
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