CHAPTER II. 
DISEASES OF THE FEET. 
General remarks on the Anatomy of the Foot. Laminitis; Acute, Sub-acute, 
and Chronic. Navicular Diseasa Sand Crack. Canker. Thrush. 
False Quarter. Corns. Seedy Toe. Quittor- Tread. Over-reach. 
Villités, or Inflammation of the Coronary Band. Carbuncle of the 
‘Coronary Band. Horn Tumours. Pricks and Injuries of the Foot. 
Side Bone. Ring Bone. : 
ANATOMY OF THE FOOT. 
BEFORE commencing our account of the numerous and important diseases 
of the horse’s foot, it is our intention to give our readers some account of the 
structures contained within the hoof, and then to describe very shortly the 
horny covering itself. 
It is quite impossible for anyone to have accurate views regarding the 
nature and treatment of the various diseases of the feet of the horse, unless 
he first makes himself acquainted with the main ‘facts regarding the 
conformation of these marvellously constructed organs of progression. 
Most of our readers will be aware that the so-called knees of the horse 
correspond, not with the knees or elbows of man, but with his wrists. These 
joints of the horse, like the wrists of man, are made up of a number of small 
' solid bones. There extends from each wrist joint of the horse one long bone, 
called the shank or canon bone, on each side of which is placed one 
rudimentary bony appendage, termed a splint bone. _Now this canon bone 
corresponds with that bone of the human hand which extends from the 
wrist to the root of the middle finger, and it is rounded at its extremity, 
where it enters into the formation of the fetlock joint. The fore and hind 
' fetlock joints thus correspond with the joints at the root of the middle 
finger and the middle toe respectively of man. Just as there are three 
digits in the human fingers and toes respectively, so there are in those of 
the horse. In the accompanying figure (from Chauveau) of the right 
foreleg of a horse, A is the so-called knee joint; B is the canon bone; 
C, one of the two splint bones; D, E, and F are the first, second, and third 
’ digits respectively. The third digit, F, is commonly termed the coffin bone. 
X represents the lower surface of the navicular bone. 
K 
